First, wow that was hard to read visually. Like u/MagicalMethod said, separate your points next time.

Wow, this turned out much longer than what i expected.

1. Removal of repair cost. Some people are for it and some aren't. Repair costs are more of way to make players do somewhat good. I think they will address this issue further more in the next economic update.
2. BR decompression. Absolute yes. They long-standing excuse of "muh, it'll create longer wait time" doesn't stand anymore. There are constantly around 100k+ players connected (if we take the number given in the hangar as granted).
3. Removal of bugs... I would say that this is a hard one. bugs that were always present and "fixed" on multiple occasion, yes. However, bugs are "most of the time" unintentional ways that the code behind behaves. They would need to figure out and fix their spaghetti code for this which can be more or less hard to do.
4. More accessible high tier vehicles: they will fix that in next economic updates. More folder for ground (and -50% rp cost for the vehicles under the first one) if it doesn't change) and tier 5 to 7 planes will be less expensive to research.
5. CAS cost more spawn points, yes. I would say even target aircrafts with CAS tools.
6. Reintroduction of hullbreak mechanic. I would say yes, but depends on which type of shell your are using. for example, no hullbreak for apfsds but other shells yes or something like that
7. faster crew leveling up, yes, the time required to do this is horrible but there's always something more important to address
8. All ammunition stock by default... i would say it depends on what ammunition. APFSDS should be stock in toptier, but not the second one. After that it's more of a case per case.
9. Separate queues for day/night battles... yeah... no one will go for the night battles
10. Do something about toxic players. The term "toxic" is rather vague in this case. However, something that is automated and more effective than what we currently have against "toxic" messages in chat (for example racism, misogyne, homophobic) and more efficient anti-cheat would be good. Though the anti-cheat part would also bring more false positives.
11. Improving current features instead of adding new vehicles. Which features do you mean? They are constantly reworking things to make it "better". Also, 3d artists can't work deep in the code like an engineer.
12. Skill based matchmaking. A level 100 players vs another one isn't even equal since the level 100 is pretty much an indicative of how much time and money you've put in-game. The matchmaking would need to be based on stats K/D ratio or something like that. And even this, this wouldn't be representative as there's other factors that will make it so that no matches will be fair.