Maybe this used to make sense when apps were single purpose but I do basically everything in a web browser or a terminal so not being able to bounce between the previously selected window(of whatever kind), as I can with Alt-Tab on linux or windows, is frustrating.
Also Command-` switches to the next window, not the previous one like I would expect.
MacOS removed subpixel antialiasing, honestly for understandable reasons, making rendering on low-ppi displays blurry, but high-ppi displays are still super expensive. I got a 32" 4k monitor(~140ppi) at Costco for $250. A >200ppi display of the same size costs 20x that amount.