20-30 minutes? how? maybe (only maybe) in 1vs1 matches.. but on matches like 3vs3 you'll play for atleast an hour or so.. so this 10 min will be vital. and to optimize even more the host may decide if he wants this time or not.. like a simple server option and if u dont want it find a game without it or host one.
Besides its MMO so u get what you had in the end of ur last game (if i got it correctly) so u'll need a bit time to recover from the damages.
So what do you think?