Pros:
Teams are pretty much even.
Nice to see some "enemies" flying on our side and hearing new voices.
Seems an increase in new players too, somehow...

Lots flying EW/MW planes.
Constantly changing dynamics in the fights.
Cons:
Maps are stale and barely change for hours on end.
Way too many perk rides in the air.
Players from other teams landing on your squad comms.
Finding players you were just winging with on your six.
Seems with some tweaking this could be a great thing.