Suggestions:
Croc
should be is inferior to current super heavy I am not sure with nerf to AOE.
In addition all flame weapon vehicles have DOT removed and DPS adjusted. DOT becomes either a timed ability or a "skill" shot similar to grenade.
Could become a bit cheaper or arrive earlier than in preview.
Forward observation
complete redesign of the ability. Available from CP 2-0.
Forward assembly now has 20 extra sight range and 20 extra range in barrage as passive. Can now call in a reckon plane.
Ambient building can be FO requires t2 (maybe AEC/Boffors or t3) unlock. Provides the same bonuses as FA. Extra sight/reinforcement can now call in a single strafe.
Air supply operation
Medic kit for all faction can now be loaded to HT and WC.
Designated command vehicle
all auras scale with veterancy (C. Panther style) and are broken to 2 part. A passive part with minor bonus and time one with more bonuses.
Recovery sappers are fine, I think maybe come 5 men? No big drama if they don't.
Forward assembly I dont know how it would be addressed. The abilities are powerful but may perhaps be balanced by their munition cost? They are high. I just dont want it to become another forward hq, dont really see the point in it other than being activated immediately.
Air supply operation; it just seems unnecessary like you could do without it so any changes would be good. If you were able to drop only medic crates for somewhat 60 muni and keep the buffs infantry receive, be handy at all stages of the game.
Command vehicle is the most valuable ability but I dont think it needs any adjustments in my view as i have already explained.
Edit: the croc should at less have higher top speed, at 3.8 (same as king tiger, normal Churchill is 4 and avre is 3.9) combined with low Armour it cannot escape almost anything.