Who are your favorite units for open groups? (When I say Imperial, I mean it in the campaign sense of Imperial and Mercenary factions.)
Mine are Regular Stormtroopers, Elite Nexu, and Regular Trandoshans.
I like the Stormies because they are cheep (3 for 6), and between the surge for +1 damage, blue green, and reroll, they can still be dangerous even in the finale!
The elite nexu is just fun! With the potential for 9 mobile movement points and an attack, this guy can move. Plus auto-cleave and bleed is really fun!
The Trandoshans shotgun ability is great! But the best part is the auto-strain ability.