TES - Tear - Level Design mock-up

Ok, so this is a view of what a game level could look like. I must admit that I rather like that style and just speedpainting the props would save me a lot of time, because doing pixel art is time-consuming and pff, the result isn't that great. That's something to ponder. TES games usually go for rather realistic textures etc, but I'm not sure I have the patience right now to do this kind of things, and sprites can always be changed later on.

I would like to give the feel that we're in a real city, with lots of houses and places you'll never be able to access but with your imagination. You wouldn't be able to enter most houses because, heck, that's not your property! Shops however should be fine however. I'll try to think of possible uses of slaves if you want to buy some (that might depend on your moral choices however, or be restricted to certain quests.
I'm not yet sure how I can deal with both depth and gravity, but it would be really cool to be able to run around, climb on houses top and go parkour (kinda).

Tell me what you think, and if you know a programmer who'd like to help, pass the links!