Volks should be ahead of them if you're going on the offensive. Falls have better long range dps then volks anyways, and they're not meant to be used offensively at the front of a push. I think the only situation where they should be ahead of volks is for ambush
Imo that's like saying shocks long range dps is really low. That's part of the units design
This guy got it right: you send meat bag like Volksgrenadier upfront to take the hit, Ober / Falls move right behind to get their sneaky damage and vet
Right now Falls is in good place no need to tweak anything unless you gonna make them pop out of building again and not flying in