Don't get me wrong, I don't want Skyrim to be more like FO3, I just thought that things like perception and general perks were a really great idea.
If you are a mage, you have 'detect life' or whatever spell. If you are a thief you can have some 'ranger' ability to feel disturbances in the ground and hear very well - detecting where people are on the compass (so you don't know where they look or what they do) and well as a warrior you wouldn't really care as you'll be able to just come in and kick everyone's butt without needing to sneak.
SO maybe even making it a part of the 'sneak' perk tree or something would be good

What do you think?