Re: What I like about X
there have been some extensive graphics performance improvements in X over the last 2 decades like glx (a proprietary open GL in the case of NVidia). There is NO need to not follow the same path of simply extending the capabilities of the X server while retaining backwards compatibility.
TigerVNC also has an X server but it does 100% software rendering because it has to. Same protocol, applications run just fine.