How many of us poor bastards are entirely out of barrack slots now?

Lert: As others have points out, buy a low tier tank and stuff crew in there.   Also, if you use the 'Return crew to vehicle' buttons on the vehicles you want to import a crew to, you won't need barracks slots to move them around. The only problem here is that those crew will need to have done one battle in that vehicle previously. This is very useful when dealing with premium vehicles though, as with two button clicks you can move whole 6-man crews around.