If you're looking to switch from X11 to Wayland, you should definitely check out Sway[1]. It's all the greatness of i3 rebuilt on top of a cleaner, leaner, meaner tech stack!
[1]: https://swaywm.org/
[1]: https://swaywm.org/
What does that mean?
Sway is a great project, but I would be careful of using Wayland, as lots of minor issues came up last time I was using it ( death by a thousand papercuts ).
For example, if you rely on years of small x scripts ( xrandr, etc. ), be prepared to rewrite all of them for wayland.
Last time I used Sway/Wayland, I couldn't find a good alternative to redshift. While Gnome has it, I can't seem to just use this feature independently on other DEs.
Again, Sway is fantastic, and I fully support moving off to Wayland. But best case scenario Sway is a drop-in replacement. Most likely there will be some fiddling. Especially if you've been using i3 for years and have built a custom ecosystem around it.
I am thankful that a wayland equivalent already exists though.