maybne 100 energy? Or 1000? soemething like that. so tjey can only repair up to 1000 hitpoints before they need to recharge back at base.
But why? Their main purpose is to repair things... I suppose you want limited healing/ rez on medics, too, huh?
medics and engineers are defenseless while reparing/healing with their respective tool engineers specifically have a cooldowntimer so they can´t always repair already if you have a problem to destroy a vehicle maybe kill the enginneers first or get a gunner/additional vehicle with you if you aren´t a c4 fairy .. you asking engineers to have hardlimited repair tresshold would significatly weaken sundereruse specifically during lowpop times ..
while we're at it, let's limit HA shield to 3 uses per respawn, LA jets to 5sec use, and infil will get ONE use of cloak fun game, innit?
Why is anyone taking this seriously? I mean with "100 to 1000 health before they need to go back" you can repair at maximum an AV round, or at the lower end one or two Basilisk rounds.
If anything, there should be a limited amount of deployable turrets. One per resupply. It should be possible to repair or pick them back up though to reposition, so long as they're not destroyed.
