AW 1.12.2 - 2.7.0.722
[B] - bugs
[I] - improvement request

General
[B] Fixed and Fixed Mobile units, including catapult boats, turn to 270 when they reach 360, which renders them quite broken in many applications.
[I] All land vehicles burn very fast, and there seems to be no way to prevent that, making explosive and flame projectiles OP in most cases.
[B] Napalm 30&45kg seem to have no vehicle that can use them.

Hwacha
[I] Operator can't see anything in first person view. This might be a feature (I support making it a feature), but it breaks with OptiFine's zoom on low velocity. 3rd person view works fine, but it makes mouse aiming impossible and keyboard aim has pretty low accuracy.
[I] Explosive projectiles are too weak to break even a single stone brick block - this might be intended but it makes those projectiles quite useless

Cannon
[B] Trajectory of heavier projectiles doesn't match the one shown.
[I] The power of cannons is pretty weak since initial velocity of heavy projectiles is so small that even bows have better range.

Ballista
[I] Ballista explosive projectiles have neglectible explosion power, rendering them useless
By all other means, ballista is great

Trebuchet
[I] Basic range of anything but Giant Trebuchet is pretty weak, with all 3 slots with power upgrade they are OK, they might need more upgrade slots to compensate that. Giant Trebuchets need no improvements.

Catapults
[I] Short range and low basic pitch makes them almost useless, and no combo of upgrades can fix that. It's just you won't come close enough to fire anything, and for defense trebuchets and ballistas are better.

Hey, first off, thanks for the great feedback, it helps us a lot for improving the vehicles.

[I] All land vehicles burn very fast, and there seems to be no way to prevent that, making explosive and flame projectiles OP in most cases.

I'll look into this issue first as this is the most frustrating one, I was only able to reproduce it when the vehicle was touching a burning fire "block".

The vehicles module is quite WIP now, but we're working on improvements which includes some of the things you've suggested, we'll probably look into the balancing of their power too.
If want to further help us with testing or if you'd like to test it and give feedback on the dev build, I suggest you to join our Discord where its easier to discuss stuff: https://discord.gg/jNhkDfU