Looks great. Works great. Awesome job.
I have 2 suggestions, though...
I don't think the ammo crates add anything to the overall experience. I feel like every user will either A) not want to bother with using crates, or B) use a different mod to add crates for every ammo type. Having artillery rockets be the only crated ammo feels awkward. I would remove the bloat, but adding a setting to disable it would also be fine.
Balance for space age seems a bit off, since this could be considered an upgrade to the rocket turret, and is unlocked much earlier. On the other hand, I really appreciate where it is in the SA tech tree, because it's helpful for clearing nests before getting real artillery.
