If the XLibre project appears to be making enough fairly-consistent progress for you to be comfortable tossing around some cash, then do gather up some likeminded folks to hire a dev to follow the guidance here [0] and help out!
Do note that I've never tried to croudfund a programmer, but that's something that I have to believe is possible to do.
[0] <https://github.com/X11Libre/xserver?tab=readme-ov-file#i-wan...>
Given that FDO [0] has been screaming about how Xorg is dead and Wayland is (despite plenty of evidence to the contrary) ready for everyone and every use case for the past like ten+ years, I remain somewhat wary about their opinions regarding Xorg development.
Maybe XLibre will be a damn trainwreck, or maybe it'll be to xorg what xorg was to XFree86. I intend to find out through the testimony of users of XLibre.
[0] ...or maybe just a very vocal subset of the folks at FDO...
Given that all their patches were reverted in upstream X11 due to quality issues [0], I wouldn't put too much trust into that project.
[0] https://www.phoronix.com/news/X.Org-Server-Lots-Of-Reverts