Volo, we both know that this isn't going to be like BG2 or NWN. At best its going to be a harmless gimmick like the Mako or the HammerHead, at worst they actually going to make the whole thing co-op which will affect the SP.
I'd sure hope the game would have more than four missions total.
MISSION I: travel to Salarian homeworld and recruit Salarians.
MISSION II: travel to Asari homeworld and recruit Asari
MISSION III: travel to Turian homeworld and recruit Turians
INTERMEZZO: sleep with love interest
MISSION IV: travel to Earth with fleet, destroy Reapers.
THE END