Eight player has been the standard in RTS for ages. Every RTS I've played over the past decade that I can think of has had at least that many. Warcraft III supported twelve players, although it didn't support 5v5 or 6v6 in official ladder games. I don't think we have to worry about this one.
yeah but iv played every RTS game for xbox360 and all there slots were only 4 players. sorry for the confusion ill fix that