[RussEfarmer]

Found two more maps:
A-Frame Night and A-Frame Day. Also, both maps also are compatible with Murder, TTT, and Hide & Seek.

After looking at the comment section, it appears that there is quite a bit of CSS textures that would be needed. This would not be of much issue to older players but newer players would probably have issues.

You could also look at seeing if Dink would add the CSS content packs from the workshop.

The only reason servers don't do this is because the download is massive. You'd be seeing first join times nearly double if you mounted CSS to the server.