A different approach would be to spawn Falls with Kar 98s (if possible) with a significant cost reduction and upgrade to FG-42s. This makes it so that they can still flank decently and probably rely more on a grenade toss. Currently spawning as 3 men feels like too much of a nerf, especially when you're doing so defensively in something like a trench.
Airborne Assault needs to be a dedicated ability for dealing damage and not spawning a falls squad. Spawning the squad seems pretty redundant since you already have one slot dedicated to spawning falls and it's likely you don't even want the squad.
Valiant Assault probably needs replaced. A forward building-based HQ, supply drop containing a pak and munitions, a Hetzer modified to use the 75mm cannon, or an individual ability. The individual ability could also come with a small upgrade for vehicle or infantry detection.
+1 especially to the modified hetzer.
More variety over cheesy/useless abilities.