It won't be too surprising that they might bring the Satellite Admins. back. The satellites themselves are still up, and since this is a meteor that's going to hit, they'll be affected as well (plus I think in SF1, they were more like shadows of their former selves because they needed to be in the Satellites or something like that).
What matters more to me is, are they going to bring back the Admin. Mega and Giga cards, and what about the stuff from SF2? Why not have cards that activate at the very least Tribe King's attacks? It's going to be kind of hard to have cards for the counters they perform; at the very least 1 is in there 100% (Thunder Bolt Blade). The only ones left are Demon Flurry and Genocide Blazer. Then what about the counters that the forms already have? The only admin from 1 that doesn't have their attack as a counter is Pegasus. Then again, there WAS the Giga card in 1 that the admin of the version gave you which was the same thing, so I guess they can pull that trick again and have a Giga card that uses the Admins ultimate attack, as well as the counters for (at the very least) the basic forms in 2.
I'm tempted to make an online Mega Man Star Force game using cards and whatnot; there are plenty of scans of pre-existing images, I just got to mess around with them a bit and I'll have the Double Tribe On counter attacks. Now I just gotta get better at either Flash or something ><;