2 people max per queue is just fine i think. With 7 people maybe you would have fun to roflstomp the whole other group, but they wouldnt for sure.

Its possible in Frontlines because there you have 2 other groups and so you have the well known sandwich effect, but with only one other group as enemy like now in the feast, there is nobody who could technically help the other team against your pre made.

So its good as it is now.