Prevent BGs from starting unless 90% of players have joined the groups

Hi,

I have joined a few BGs in which we had half the amount of players the other team had, or less. This is an unfair start and most of the times it is impossible to overcome. Please make some rules to check if the teams have equal amount of players that joined and also the max amount is reached by at least 90%.

It would also be nice to make a crystal check-in as in arenas. To make sure that ppl don't join afk. If they are afk, instantly replace them before the start.

Thanks.