Simple enough.
When I sit down, I don't spread my arms or my legs, I don't have one leg out and the other bent up. I sit down like a normal person should. Legs crossed, hands folded on lap, back semi-straight.
The in-game /sit should be changed. You know something's wrong when /kneel looks more like actual sitting than /sit does.
So as the title says, the current /sit should be /relax, and a different sit emote should be added. Because come on, a Dark Lord of the Sith (Nor a Jedi Master I think) would sit like a college kid in a hippiecircle.