In college we used to play Warcraft and Starcraft 4 vs 4. The only viable strategy was to "RUSH" one or two opponents early in the game. Often by the turn 10, all the sandwiches gets toasted and eliminated but sometimes heavily crippled. The result lead to a long battle of well developed and prosperous 2 vs 2. I hope my team is reading this.
I remember our teammate "Tug" screaming "Help! I am at North! Send me some troops they are killing me!". After a few minutes he starts to talk calmly "Don't come. Don't even bother. In fact take my gold. This sucks".
I think 4 vs 4 could become very popular if we can get 3 minutes per turn with a minute increase each turn options. This could be ideal in the weekend.