Comment by Analemma_

I don't have a Snow Leopard Mac in front of me to compare, but as far as I can tell, four finger swipe works the same way it always has. It's hard to find targets if you have dozens of windows open, yes, but I don't remember old Exposé being any better in that regard. I think one or two macOS releases had some kind of "Mission Control UI" in the bottom half of the screen when you did the swipe, but that's gone now and the entire screen is used for the tiles.

Can you explain more about what regressed since the old Exposé? I'm just not seeing it.