I'm a fan of the yellow paint or otherwise highlighting of things I can do things to/with over having everything look the same and being required to click everywhere, all the time in order to know what I can, and cannot, interact with.
Playing the original Hitman vs the newest Hitman is such a drastic change not just because of the graphics, but because of little design elements like that. Makes it way easier to plan what you're gonna do when you know for sure what you can work with.
It also means you're less likely to miss something in a place you've been in and having to come back.