It's kind of fucked how much is missing out of the game, honestly with all of the silence about lobbies I half expected there to be no lobby functionality at all, so at least I was wrong on that count.
I don't play offline much at all (might change since I learned I live about 15mins away from Wednesday Night Fights), so the rematch button missing doesn't bother me that much. But the no spectating thing is pretty killer. I like to join lobbies with streamers and now I wont even be able to see the match at all unless either I or the streamer are in the match. That's pretty balls.
I'm still excited though, like others were saying I'd rather have it in this state than suffer a delay. The hype is too damn high.