The fact that they are able to do so is quite amazing for a high DPS unit (when stationary they have great damage at all ranges). I honestly think that partisans should be the only infantry that can spawn behind enemy lines from buildings. Jaegers, and stormtroopers can get a cost reduction and be able to spawn only spawn from buildings in friendly territory, while falls can either do that or get a further price decrease to their unit price and spawn from off map. It really doesn't make sense to me why I can call in a no-micro flank which can destroy a well defended early game position in a matter of seconds (falls).
I really like this idea, this spawn behind my 3+ support weapons and wipe everything out requires no skill but MP.