Way, way too obtrusive, and not dense enough. I like it in concept, but it's just not practical, especially on a laptop screen.

I get that. I use it on a pair of 27” 1440p monitors. It really supports my preferred method of multitasking, which is really rapid-switched single-tasking.

It will get out of the way on smaller screens, though. As soon as a window gets close to the previews, they get out of the way, unlike the dock.