I finished my second Stormtrooper squad:
I converted them in the way back when, mostly with arm swaps, so my two squads don't look identical. The squad leader had his arm repositioned instead, and the heavy weapon trooper got a green stuff pauldron as a late addition. It's about as much as can be done with the available poses, I reckon. I don't think I want another squad, although I may add a few more heavy weapon troopers to swap out.
Luckily the Empire has no shortage of different troopers, so there's plenty left to do. I may vary it up a bit with some Rebels again, though.