Well. I was thinking specifically about Gnome Shell. Someone has recently complained that switching windows hot corner is very uncomfortable. Can anyone fully agree? I can't. When I have many windows opened and I'm constantly opening and closing them, it's great, however sometimes people need some integrated environment.
When I am using only few windows I can remember which one has been opened first. Then the best solution is surprisingly the one from Windows 7, where SuperKey+numbers switches to corresponding window on the bar. It's so obvious and easy that we may think that we have nothing to do with it. Of course it's false!
We can still make improvements. I simply want to introduce some ideas to increase out productivity (well, maybe not best word for people who just talk). In the high school I was forced to read poetry. At first I could it twenty times I don't see anything, but analysing line by line let me deepen my interpretations. It didn't change my negative attitude at all, but showed me how how much can be overlooked in overall view. (sorry if I am obvious once again). The intuition may omit some things. By analysing single case we can find solution for wide range of them, just as by analysing single verse of poem we can find an idea for whole interpretation.

(I wouldn't like to be considered a great art lover who I'm not. I know that my comparison may be less helpful as it pretended to be.)