After playing with this change for the past few weeks, I gotta say...
This is the most blatantly abusable change I've ever seen in any game. Ever.
Now, I'm saying this because I've been one of the ones abusing it. And considering the sheer hate I get from just about any other MWO content provider because of it, I think my point is proven. A 4 man allows you to brute force cheese into the game, whether it be 4 Rifleman IICs with 6 AC2s, a group of Vapor Eagles with ATMs, or in my group's choice LRMs.
We've literally killed people before they can do any damage, and done so multiple times in a match. A good 90% of the "stomps" that PGI is measuring that we've had were my group doing more than the entirety of the enemy team.
THIS SHOULD NOT HAPPEN. EVER.
But yet it does, and it's done with VERY little actual effort on our part. Please for the love of god restrict groups to 2 players. If people want to group up larger, they can sync drop.
P.S. If you keep the damn thing how it is, fix the goddamn spawns. Tourmaline Desert and Forest Colony in particular.