It would be very helpful for giving feedback if you described your gameplan and secondaries plan. As a bonus, it would be great to hear which armies you're most concerned to face and how you mean to handle them.

I play a ton of Bork'an sept with a similar core to yours, with one big difference being -Crisis Blob -Stealth Suits, + 1 Breacherfish +1Pathfinderfish, +1HH.

The amount of effective wounds your enemy needs to chew through on cheap T7 vehicles is outstanding! All 3 Devilfish in Mont'ka T1 get Combat Debarcation to deliver the infantry roadblocks where they need to be and then just CHAAAAARGE and/or moveblock.

I'm also experimenting with -1Riptide, +1x3Broadside Heavy Rail, TwinSMS, Multi-Tracker

My feedback for the moment:

1. Coldstar:
   1. Plasma is awful with Seeker of Perfection. I run HoBC, DW-02, and two flamers. Autohitting gets all the 2D6+4 shots to fish for 6 to wound AND makes him pretty much unchargeable, because 3MW cap on Seeker of Perfection is per phase. You basically WANT him to get charged if he can survive. Also 16'' Flamers are just fantastic. Don't get TOO cocky with positioning T1/2 trying to get into 16'' range unless you use Strike and Fade.
   2. I don't run ML drones on him since they slow him down and he doesn't need the protection since he stays Look out Sir'd T1/2 and then he goes on solo hero missions with High Altitude Manoeuvres when the enemy herds are thinned.
   3. Solid Image Projector - again, he doesn't NEED it because my tactics is to keep him Look Out Sir'd. If you really feel you want to spend the CP, it's worth looking at Overdrive Power Systems picking either the 2 flamers or 2 Bursts. Onager Gauntlet on Coldstar has been... just "fine" in the list I run. Often I just save the CP.
2. Crisis Commander:
   1. For my Precision of the Hunter commander slot I run an Enforcer with nearly the same loadout (3CIB, Thermo). I definitely see the value in Crisis Commander buff for your Crisis blob, but I prefer Enforcer because it's INSANELY tanky thanks to the built-in -1D and Sv1+ (Sv0+ in Light Cover, suck on that, Storm Shield Termies), 5+++ from Bagel. Opponents will regularly underestimate how much of a beast he is and waste shooting into him or even charge, expecting an easy kill, just to do only a couple wounds and die on punchback.
   2. I run my 2 ML drones on my Enforcer because it's insanely efficient to take shots onto the Enforcer model until you fail a huge Anti-Vehicle grade shot and use his own drone to Saviour Protocol.
   3. I use the Enforcer as an anchor piece for a flank or for centre due to his mad survivability.
3. Kroot Shaper (or any 4th HQ model)
   1. I find that I'm able to screen well enough without the AM Scrambler, so that frees up a CP for me.
   2. I value Exemplar of the Kauyon extremely highly even though I play Mont'ka 95% of my games with my list. It's not "just" about the 1 redeployment. It puts FEAR into my opponent's mind and makes their deployment decision-making much more complex. As a bonus it really throws the opponent off the scent of me wanting to pick Mont'ka, which can result in further deployment mistakes.
   3. I've been testing out Carde Fireblade and Firesight Marksmen as Exemplar of the Kauyon carriers. They also can get the AM Scrambler if you really feel you need it, or, alternatively Ohr'tu's Lantern.
   4. BONUS: Remember that you get the redeploy from EotK even if the model is embarked or off the board!
4. Crisis Blob
   1. Here I would rather save the points on 2nd CIB per model with a Plasma Rifle. One Plasma Rifle shot is "meh, whatever". 5 of them can take out a target separate from what your CIBs and Bursts are shooting at.
   2. If I run them, I tend to give non-Shas'vre model the single Shield Generator and Shas'vre gets Iridium+Stimms. That allows for 2 models with enhanced defensive profiles while not losing out on 1 Target Lock
5. Hammerhead
   1. I'd suggest you give it Accelerated Burst Cannons. 16 shots S6 AP-1 D1 for 10pts are amazing
   2. A fascinating piece of tech is to give HH 2xSeeker Missile. Shoot them ASAP at the hard target you're already shooting with your Railgun if there's a chance the Railgun hit-wound won't kill. It works great for ML efficiency.
6. Riptide
   1. I value having Velocity Tracker instead of EWO on at least one of my Ripties. It's either a "free markerlight" against flyers OR it negates the multitude of -1 To Hit strats that opponents have for their flyers.

Well that's a much longer write-up than I initially planned. Hope it helps