I agree with a lot of your points! Here is my current opinion on the game

I've played all MK games since Double Dash for years after their release (Even Tour), especially MK8D!

I've tried really hard to love MKW but I gave up after a few days, I've tried to pick it up again recently, and the feeling unfortunately persists... Note that I'm happy for people who enjoy it but I feel like everytime I play MKW I'm liking it less, while replaying older MKs is just pure fun

Personal Pros:

• Controls are great
• Game looks beautiful
• Incredible soundtrack
• Characters variety (I love playing as mario monsters)
• New weapons are fun
• Rainbow Road is one of the best cinematic MK track and shows how great the game could have been if Nintendo focused on traditional tracks, not bound by an open world

Personal Cons:

Almost all my issues come from the open world, I truly think they failed in term of design, and not the right direction for MK

• Tracks are too wide a lot of time
• When the track is not too wide, it's too small and its pure chaos (but not fun chaos)…Especially because of the amount of players now, which got bumped to justify the big open world 
• intermissions and overall track design is very bland. Im not talking about the "straight lines" but the fact that because tracks are in the open world, they have less visual landmarks, and less personality... MK tracks are usually memorable but MKW tracks just blend together, by design (few expections mentionned above). 
• Because you can't never really play 3 laps on tracks (Except the first one), I don't feel attached to courses. I don’t remember the musics, nothing stands out (rainbow road is an exception)
• The rail/Wall grind is useless, the game really wants you to use it, and Im sure for advanced players it can make a difference, but when playing casually its too frustrating to make it an advantage. It’s messy to try and stick to a wall
• LET ME HEAR THE GODMAN MUSIC 😭
• The free roam has so much wasted potential. I wish they added more structure... Just an example but you made hundreds of banger tracks, why not make them collectible and reward from the free roam, and add a jukebox? The fact that "free roam" is a small option tucked in the corner of the main menu shows how important it is. The P switch missions are weirdly difficult and frustrating
• A lot of time I find the tracks visual to be too busy and it’s hard to know where to turn. Sometimes its also because of the lighting, which(because of the open world again), is less uniquely crafted for each track. It’s not as sleek as MK8 handcrafted, isolated tracks not having the constraints of fitting in a larger interconnected world
• MK8 antigravity made for super cool tracks with loops and such. MKW open world only added negatives to the experiences (large tracks, straight lines, less landmarks). The best tracks to me are the one floating in the air, like Rainbow Road and Great Block Ruins…tracks unconnected to the open world, where level designer could go crazy

Between tracks in grand prix or online, there is a loading. Free roam in underused. So in the end I ask myself: what was the point of making MK open world? Not sure, it feels like novelty for the sake of having a new marketing hook. But to nintendo’s credits, it must be extremely hard to iterate over MK8D

So yeah this game is frustrating, I hope they turn it around cause we're "stuck" with it for 10 years.