For "naked" humans
Why not show them with underpants, socks, and tank top clothing or a shirt only?
Can be didactic.
Unvanquished is an open-source FPS game featuring team-based strategy and RTS elements, pitting humans against aliens in a futuristic setting.
You have a point here. Yet players don't see themselves, so this might not have a big effect.Can be didactic.
You will see other, and, may be should add a preview in the armory?