A little late to the party (again), I know...
MP is, by and large, the reason I play 'action' related games. While other types (the Master of Orion series, or Civ 3 for example) lend themselves better to single-player play, games like BCM get 'old' quickly even with the best AI (and yours is up there)...
It's the one thing that has never been dilivered yet by anyone (although the fan-organized 'Alliegence Wars' came close to giving this to the old MS Allegiance): combining the MP action of a 'simple' 1st person space game like X-Wing v TIE with the strategy of a simple 'MP space strategy game' like Netrek. The level of detail possible with a BC related MP game (fight over individual systems, instead of 'bases' ala BF42, etc), and the ability to operate something BESIDES a small fighter would create a completely unique MP experience. And due to the nature of this game's player-base, there would be alot less trouble with the miscreants found in BF1942 and Tribes2...
From what I'm reading, BCMG will have the oft-discussed MP mode, being somewhat like an 'expansion' pack for BCM Original... With this being the case, BCM multiplayer becomes an 'I wish it had got there, but now I'll get BCMG for it...' Just as long as BCMG:MP doesn't becaome a promised-but-delayed feature in that title too... That would be very disapointing...