The problem with X11 is that it's everything-and-the-kitchen-sink. You can't solve that by making another everything-and-the-kitchen-sink. You need to cut down in some places and modularize the other things.
One perfectly legitimate way of doing that is to do one of those things and ask others to do the other things. Development would not go faster, if they put those other aspects at the end of their To-Do List as well.
One perfectly legitimate way of doing that is to do one of those things and ask others to do the other things. Development would not go faster, if they put those other aspects at the end of their To-Do List as well.