Most Imperial lists with squads are either a Rhymer bomber ball or the flying circus of aces. I never see swarms of regular ties or interceptors locally and rarely online. I can think of several reasons why. You can't command them all easily, so lots will have to make do with just the move or shoot which loses some efficiency. And they die pretty quick to AA fire which their numbers don't really help them with directly.
What kind of upgrades would it take for us to see this kind of a squad build be competitive?
I'd try it with something like this in a list I think:
Officer Upgrade - pts ?
SQUADRON COMMAND - if all squads activated by this command are the same, double the number of activated squads.
