Dunno why quoted me, as I'm here from early access, and I know exacly what you mean,
To OP, RWZ you get from daily and weekly, and you can exchange WZ comms for RWZ comms at ratio 3:1 (well, 30 WZ comms for 10 RWZ).
and please, NO limitations on classes... plus, having 3 healers for example, has it advantages and disadvantages. limitations will only break randomness and (as example of group finder) healer will jsut sign in as dps and can get in. no way to determine if player is healer or dps from script (hybrids for example)