No experiences, because for a strange reason I can't find any custom race/dm. I do use quick join.
Oh and 3 other people joined me in TDM "Downtown Destruction" (my own TDM)
Basically an empty bit of downtown, one team starts in a construction area, either on a roof with heli and snipers, or on the ground with various other equipment.
The other team has the same, but different building.
In the middle was a highway with DM spawn points, a few weapons and a bridge blocked off with car accident debris. Oh and some parked cars to be stolen. And each team spawn point had a Barracks and two quad bikes.
It was a nice idea, but eventually one guy stood on a big building, sniped me, my team mate couldn't find him, and everyone left except for me.
But I'd love to see how it would play out with the full amount of 16 (skilled) players.
I am on PS3.