Feature parity with X has never been the goal. Because most of X’s features are a legacy of the 80’ and dreadfully obsolete anyway.
I’m all for maintaining compatibility where it makes sense, but carrying over a 40 years old feature set just in case is the best way to prevent anything from moving forward.
Wayland can already do or is actively being developed for stuff that is relevant to modern systems: multi-monitor with different refresh rates and scaling, HDR etc. Stuff that X would never dream of.