Wayland+sway switch from x11+i3 is so simple and works so well.
Only minor annoying thing not working for me are right-click context menus on some applets like Blueman and Steam.
Nvidia's official drivers have supported Wayland quite well since the 550-series. If you haven't tried it in a few years, now is a great time to give it a spin.
My problems with Wayland are KDE specific. I tired it, but there where so many window management regressions and sometimes graphical glitches that I switched back. But that was under plasma 6.4. Have to try again now on 6.5 to see if these issues are fixed. If not I should write a bug report, I guess.
Also there needs to be an alternative for (or patch to) simplescreenrecorder that works under Wayland. I don't want use a complex thing like OBS to make a quick demo video to demonstrate something for a co-worker and stuff.
Didn't know Spectacle can do screen recordings now. Just tried it: The "New Recording" button seems to be broken. It does nothing. No error message on the terminal even. Maybe it only works under Wayland?
Personally I like Rust, but I'm against rewriting old well tested tools in Rust just because. There is this opinion out there that Rust devs rewrite everything for no good reason, but I only really saw that happening in coreutils and sudo. In the other cases that I heard of the rewrite wasn't from C/C++ (but e.g. from JavaScript and they need more speed) or they needed a rewrite anyway for different reasons (e.g. first working parallel style calculation in Firefox).
So I'm very skeptical of the coreutils rewrite. In the current state it's incomplete, slower (not optimized), and replacing all GPL code with MIT/BSD code also feels strange to me.