Now that we have had a few wonderful days of following the games and eventual winner, I think we all understand what cards really made Imperial lists competitive:
pre-nerf Palpatine and X7s.
I'm not calling out any debate on their OP-ness pre-nerf of these cards; I'm just saying: the facts I see in squads here locally (Imps getting beaten way more than they win), at the recent System Opens (where Imperials are almost scarce to the point of being endangered) and at Worlds (look at the squad lists and outcomes) seem to bear this fact out.
...am I nuts?