Partly No.
Because I want to see: more depth in teamplay options. Better Squad/Fleet management. More brainstorm on how to solve the issue of a frigate being the same worth as an interceptor on the battlefield.
I do however say yeah to a more death match mode, where kills are the main objective, and something to replace Arcade Mode, since it should be covered in Sector Conquest by now.
But it definitely should stay a team match; It could introduce Tier Mixing however, by making the killpoints of your ship dependant on a combination of class (size) and Tier; and it wouldnt hurt if there is a secondary objective (kill the enemy dreadnaught to win)
A complete free for all, where you shoot just anybody does not make a lot of sense, but it could be definitely a lobby mode you could set up on your own (since it should not be that hard to come up with that), but not in the Arcade.