You are the one who is complaining about lost features, but hasn't given an example. The main example being repeated is network transparency, but I honestly can't work out why I should care. What other differences convince you of X's superiority?
Here's a challenge: tell me what is missing, and why it's bad. I am a fair man, and if your reasons are good you'll win me over. But this:
The problem is that what you need isn't necessarily what other people need. There are people who don't use the mouse, would you be happy if Wayland skipped implementation of mouse support?
is total nonsense. If you cover all the usage cases of the old system, why are you replacing it? Some features are more important than others, and it is perfectly sensible to talk about "the average user", since the features needed by different people overlap, with some features needed by very few people (e.g. network transparency), and others by almost all (e.g. mouse support).