Keeping the taskbar in its icon only default mode makes it basically like the Mac dock, which isn’t too bad, except that having more than one window open in a program which causes the button to “stack” for each window, then requiring an additional click or an awkward hover-dance to surface one of that program’s windows. If I disable stacking and enable window names, making it like the Win9x taskbar, I get back single click window summoning but the taskbar fills up very quickly and becomes noisy. Either way comes with drawbacks.

Alt-tab scales badly simply because of the sheer number of tab-taps it takes to switch to any given window when you have more than a handful of windows open. Without any logical grouping (like with macOS Command-Tab app grouping), it gets too full too quickly.

Windows also lacks a universal shortcut to cycle through only windows of a single application (Command-` on macOS) which I often miss.