I've been using Windows 11 without much complaint since its release, but off the top of my head, I can't name a single "feature" that would motivate me to upgrade if I were on Windows 10, besides "continued support."
When unplugging and plugging back in external monitors it moves windows back to the same monitors they were on before unplugging them. This is probably the most significant QoL feature. The control centre generally feels better than Windows 10, except for switching sound outputs or getting to the volume mixer, which require too many clicks. The settings app is a little more cohesive and has had some more control pane…
Respectable. The state of desktop Linux is pretty good but it's very much a 'your-mileage-may-vary' situation. Every 'exotic' thing you introduce into your setup (having a variable-refresh-rate monitor, having an HDR monitor, two monitors of different refresh rates, running Wayland over X11, having a brand new GPU, having an NVIDIA GPU) is another possible, sometimes likely, source of pain.
Some of the multiplayer games I play with my friends can be played on Linux, but I make a point of using my Windows partition for those because I don't want to waste their time on my troubleshooting.