You want a "sit anywhere" function? In a game? I'm all for options, but there are about a thousand other things that could be time better spent. How many people would use this anyway? Would it even be worth coding up?
I would love the ability to lie down on a camp bed that you can carry around, purely for RP'ing anyway.
Sometimes I really can't be bothered to go dungeoning and just look around at the scenary and take it all in. I found a great hill that looks across at mountains with a lake and waterfall below.....(that was in my last save and I'll be blowed if I can find that spot again). I can imagine my woodelf sat there in the evening waiting for the sun to go down whilst eating his dinner and then getting some shut eye on his camp bed.
It's all about the immersion for me
EDIT: That said, I think there are more important priorites, like bug fixnig before new features like that are introduced. Specifically broken missions need to be fixed