Clothing is also something I pay attention to, depending on the material.
With my AV1 Widow, I've kept the her arms down at her sides (guns still in her hands) because I noticed having the elbows bent was causing creasing in the material that wasn't smoothing out. I didn't like that and didn't want the material too stretch too bad so I changed the posed.
I don't have any of my figs in extreme poses - I think Coulson is my most "posed" figure with the way I have him holding the destroyer gun, but I don't worry about his suit.
While I admire action poses when I see pics of them, I don't mind the more static poses - these things are just too expensive for me to feel like I'm taking a chance on tearing something.