I have two friends also playing this game, a speedster and a menace. I hired them before unlocking these player types, and having played about 9,000 games after that I still couldn’t unlock them, until now. I removed the menace yesterday to see what would happen, and right on this morning I got the menace Sokolov!
I’m wondering if the game didn’t let me obtain those player types because it thought I already had them? If so I’ll need to do the same with the speedster to I guess...