Why Do Prem's Come With A Crew?

Jhuderis, on Mar 17 2020 - 09:35, said: If the whole point is to swap crews in/out of prems, what's the reason they come with a crew? At least, it would be nice to be able to choose between a crew and something else with value like some equipment.    It costs the same to retrain a "free" crew to another tank than it does to just buy it.    Anyway, just curious if I'm missing some use for those crews other than immediately dismissing them.   Cheers!