Nice Idea there.
Thats actually a facinating Idea lol.
But tell you what I've noticed?
sometime if the Push on the fan(s) is to high by other fans (fans Y lets call them), fan x can actually lows down.
It messes with the momentum of the fans, and slows them down.
Thats only in extreme cases anyway - and if fan(s) are directly against fans X.
Pretty sure your Idea is a winner with that setup though