I think it's a great idea!

Racing multiplayer is already neat, racing in "big" teams is awesome. But racing in 4 teams sounds pretty wicked

In light of the WC and everything surrounding it this should be ample opportunity to really train in paired multiplayer racing. And advance everyone even remotely interested into progressing their overall tactics. To me that is a nice prospect in itself.

It could also prove to be even more fantastic than 2 teams fighting in a filled out field Count me in anyway!