The only reason I use Wayland is display scaling - with a high DPI screen, many apps are blurry or inconsistently scaled under X11. Given the parade of other issues Wayland brings, I wish the development effort were instead spent on improving highDPI support in X11.
O man I recently tried to use fractional scaling on Wayland, and it went very poorly. Electron apps like slack or signal do not support it, and flameshot also works very poorly. But I guess at least fractional scaling is to an option... (Which I had to enable in some secret setting somewhere)