One of the reasons I like the ARC Trooper Captain figure so well are the accessories he comes with. They are great to equip other figures, too.
If you look at the tons of accessories the GI Joes come with, it is hard to believe that Hasbro can't do the same with Star Wars.
The little weapons caches were a step in the right direction, though. Too bad they abandoned them. Imagine they had packed one of these in with the ARC Captain. Still, the extra helmet and the pauldron are cool accessories.
While I'm ranting: there's no reason for a Star Wars figure not to be ball-joined everywhere either.
Hasbro, do you hear me?