this is bunch of suggestions in 1 suggestion btw:
1. AA could shoot down
2. open your own crafts chests inside claims
3. airfields
4. more cannon variations for normal tanks (for example 88mm, 50mm which could have its own drawbacks like faster reload but less dmg or more dmg but slower reload)
5. small bomb payloads for fighters (like max of 2 coal blocks as a torpedo)
6. nerf wool
7. make it so that submarines can have some terracotta (not extordinary. like 0.7% of the whole craft)
8. remake squadrons (very very buggy and glitchy with some overpowered stuff too)
9. add more global events.
10. fixing the cannon thing (the thing where you cant put nothing under a cannon unless its 3 blocks away from the cannon)
i hate that and it doesnt even bring much advantage. i loved the older cannons when i could actually make cool looking tanks which actually are good too rather than these new tanks used.