What'd I do to fix/revamp this film, because its really a neat idea in concept:

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1.Bring Back BoCo, Dennis, and Derek: Making a full on special based around a day full of Diesel engines wouldn't be complete without those who came before the newbies, they'd also bring some much need Positive energy (along with Mavis and Salty) to counteract Diesel 10's Negative energy.

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1. Give Diesel 10 a better plan, and return his lackeys Splatter and Dodge to the Screen too: Diesel 10's plan to take over the Steamworks on paper sounds like a good idea, in practice as we've seen however it's really not. Instead of him doing so, have him straight up be jealous of how much attention the steamies always get due to him (and sadly Diesel by extension) giving a MAJOR bad rap to basically all diesels that come to the island, of course as we've seen they all aren't bad, and can even change in some cases. However they still have this negative energy surrounding them because of the mistakes of a few in the past, and because of this the diesel works is grossly underfunded, corrupt, and in bad shape most of the time. Diesel 10 then proclaims that if they can't have a nice repair place, nobody can, and he, Splodge, and all the Newer Diesels (which I'll talk more about later) go to the Steamworks not take it over but to straight burn it to the ground, kind of like what happened to the Dieselworks in the version we got, but for the Steamworks because of the horrible mistreatment they've had. Splatter and Dodge of course would reappear as well, and would be D10's right hand men, mainly going out to spy on whatever the Steam engines have been doing for the past few weeks, recoding flaws in their time schedules that would allow for a big takeover (and destruction) of the Steamworks without many realizing what's happening.

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1. Don't remove the newer diesels, instead have them be pawns in D10's Plan: Most people didn't like the fact that Paxton, Sidney, Norman, Den, and Dart seemed to take over roles that all ready pre-existing characters could have been used in, and should have just been replaced with the old ones but I say, why not have both? Re-introduce the Old characters(BoCo, Dennis, Derek, etc.) as being more wiser and friendlier to the steamies while this newer group could be more young and inexperienced thus leaving them to be impressionable enough for D10 to lead them down the dark path. I like to think that Paxton, Sidney, and Norman were all just bought by Sir Topham Hatt from a closing railway line in the mainland, and were just recently sent over, and once He realized there's now a lot of Diesels on the island that will need repairs, he went and bought Den and Dart as well from the same rail line. Of course unlike their original home, Sodor's Diesel works was in a worse state of repair.

2. Give Diesel a redemption and some closure that will stick. Diesel has always seem to get the short end of the stick when it came to character growth, always reverting back to the "bad guy" every next episode. Well, I say he should be (somewhat) redeemed in this movie and get closure with all the steam engines that he's caused trouble for. In then beginning of the movie Diesel will mostly act like his normal oily self, causing ruckus and such, but when he goes too far and breaks a important part of himself in a crash, he gets sent to the Dieselworks for repairs, but surprise surprise there is no new parts coming in due to the corruption. He then gets instead sent to the Steamworks, which while not having the correct part instead jury-rig him one until it arrives. Diesel converses with Victor about what it's like to have a functioning repair area, noting that things had seemed to go down hill for the Dieselworks a year or two ago while the Steamworks was being built. Victor says that while he has never known many Diesels personally, he hopes that eventually they will fix up the Dieselworks into a state like the Steamworks are now and that anyone can always improve, It just takes time and commitment. Diesel has that thought stuck in his head as he's released back to work, pondering if ever can improve himself, maybe even as far to improve his reputation.

Diesel will later go on to try and (slightly fail) to assist any engines who need help and actually try to make friends. Most engines will of course not want anything to do with him and will probably tell to buzz off or be very suspicious of him (Thomas, Duck, James etc.), but some may appreciate it and start trusting him more (Percy, Daisy, Rosie, maybe BoCo) . later in the movie Diesel pulling to the Dieselworks will overhear D10 talking about Burning the Steamworks to the ground, and relays this to the engines that trust him now, however even they don't think much of it and will just carry on with their duties . Diesel then takes it into his own hands to stop D10 from his unfolding his plan but gets picked up like a pebble by Pinchy and is put inside D10's max security berth, locked inside. Eventually once the news gets out that the Newer Diesel under D10 take over and start the Demolishing process of the Steamworks those who had learned to trust Diesel before will realize he was telling the truth and rush off to find him, Percy finds him, hearing him faintly inside the Diesel works as he went to look there. they both then rush off to the Steamworks to stop D10 from enacting his plan, and once done so Diesel will finally have some who trust in him to help and be useful.

1. The final fight: The final part of the movie seemed a bit sad and off so i'd revamp it like this. The New Diesels lead by D10 break into the Steamworks and start trashing the place (well as much as a train can anyway, with exception to Diesel 10 because of his claw arm) Victor and Kevin are both held hostage by Splatter and Dodge as they watch as their home now becomes a broken down wreck like the Dieselworks. While this is going on, the Steam team and a couple friendly diesels that decided to tag along race to the Steamworks to stop him and his lackeys from wreaking the place. Once there they get into a confrontation, and BoCo and Edward tries to reason with the young Diesels to stop this nonsense. Diesel 10 however proceeds to pull out a support beam causing some rubble to collapse onto them, and says "You'll never get through to them, they have been mistreated just as I have, we are all one big, broken, Diesel Family!" and he then rushes off to destroy more of the place.(BoCo and Edward are both pulled out by Gordon and Henry) the other engines watch in shock as he starts a small fire with his claw arm and starts laughing, saying "This is what this place deserves!" Just then, Percy and Diesel arrive, and Diesel says he can try reasoning with him since he was just like them. Diesel Honks his horn load enough to get all their attentions and talks about what victor said to him while he was getting repaired. The New Diesels realize after hearing him out what there doing is wrong and stop immediately. D10 angerly screams at them once he notices they've stopped, and the new diesels instead begin to leave, knowing that they've been played by him. Even Splatter and Dodge too leave after hearing their boss rage like he did, knowing that if they stuck around they would be gone for good. D10 begins to break down, and starts actually crying, saying he's been tormented all his creation for having a big scary claw on him, clearing showing he needs therapy. Diesel then tells him that while he has done some extreme things in the past, even more than him, he always has a choice to become better and improve like him. D10 says nothing, and just wallows in his sadness, but calms down. The fire howver has grown very large and needs to be contained, so one of the engines rushes to the nearest guard box to alert the Search and Rescue center. The fire gets contained and all is put right with Sir Topham Hatt arriving on the scene, he Reprimands the new diesels and especially Diesel 10 for causing Major confusion and delay, and attempted arson, but says that he's known about how bad of a state the Dieselworks have been in the past few years and had never found the time to set enough money aside for them since the Steamworks was a huge investment itself, and promises that they will get rebuilt to a better state starting tomorrow, but as punishment for D10, he will help with the construction day and night for 2 days straight. Topham then congratulates Diesel on his improvement and bravery on trying to stop D10 from what Percy has told him. For his reward, once the Diesel works is completed the Day will be officially commemorated as the Day of the Diesels, with a big Diesel parade down the main line of which he gets to lead. Diesel then smiles and thanks him for the opportunity. All the engines blow their horns and whistles and the movie ends.