I said this many times. Why does it have to be 4/5 of the same class. You don't have to.

play mixed, you get more buffs too. control wise, it is all the same for melees. PewPew from the start, CC/interupt if you can, hope for the best. The target switching, interrupt, defensive CD, and peel off are all general arena PVP strategies, not related to which class you play. You don't need 4 of the same classes to do those.