In-game player cap & spectator queue

Force everyone beyond a certain point to spectate -- spectators get to queue up. In response to me doing a 1v1 match, tons of people wanting to join to watch, and just relying on honor system to prevent mid-joiners. Spectators are prioritized by how long they've been waiting. I'm thinking of hijacking base SRB2's team scramble for a scramble option later.