dude, those missing features might still be planned for a future update for all we know. development is iterative
Based on the way Sandro answered questions in the previous livestream, I'm not too confident about this.
All questions regarding expansion were met with the caveat, IF it is popular, IF people are excited about it, IF IF IF IF
So that leaves us with this scenario...if you are hoping for the other roles becuase you are not exactly excited about the current ones...well, then you better play the heck out of feature you don't care for or else you won't get what you want at a later date...