These are more or less an exercise in learning to envelope and weight models, and these are for my SWBF1 mod, but here's a few pictures of what I've been doing with the stock models:
The pauldron and backpack mesh are from the same Wii TFU model source that I got the Heavy Trooper parts from though I have modified the UV for the ARC Trooper.
I also have this model too:
Ref:
Though that picture is in Metasequoia, I've nearly fully-enveloped and weighted the model. I think that just leaves the Scuba Trooper concept and the Blaze Trooper not done from the ROTS video game.