I don't know exactly how to describe or put it. But it would be good to allow everyone to know each other's region and time zones, so it's easier to schedule certain games. I.E. I'm usually available on weekend mornings, usually Thurdays through Saturdays at around 9:00 AM-12:45PM (0900-1245) GMT-5:00 (Eastern Standard Time)
Basically helps with scheduling games easier with other players.
And also everyone should have Lists for the games/roms that currently prefer to play/currently have (sorta like their favorites) .
I.E. I currently have the following games/roms that I can play or prefer to play.
(It's currently small, will get more later)
Alien vs. Predator
The Punisher
Armored Warriors
Cadillac & Dinosaurs
Final Fight
Giga Wing
Magical Drop III
Puzzle Bobble
Puzzle Bobble 2
Sengoku 3
So this for example helps separate crowds of gamers somewhat, those that mainly are here for the competive fighters and getting ranked, and those that just want to have fun and or play co-op(with my ping, and inability to host no matter what I've tried, I'm better off playing co-op or puzzle games, don't really have the money to invest in any controllers to play vs fighting games atm)
Well those are my thoughts.