A thought I have, we can use that side server that we used the match for, that way the public server doesn't take a hit and people can still play.
Would everyone be okay using the same cvars as with the match settings? No sending points, have to be healed with kit if b/w, FF ON, no Boomer infections/Gift Spawns. I thought the setings made it a BLAST to play and much more focused on team play. As for teams I think a minimum of 6v6 would suffice for a pug though 8v8 would be best. If you wanted to do 4v4 then we could set that up independantly of GC admins unless you wanted the plugins.
Lastly, on the topic of creating teams, I think if we wanted to set up weekend PUGs maybe either have captians pick teams or people make a team that they like thats on and say let's go! Having random teams can be fun since we know each other but there are quite a few people that enjoy playing with particular people for whatever reason (ex. I like being on sessions/yuri's team because I like laughing when i play l4d2)