If you are going to bring up a second CSS server, then why don’t you just split the maps up.
For the original one, which everyone plays on, set it to normal maps only, meaning none of that
SK3, DEAGLE, whatever custom crap. Set the second server to be pure custom maps and mods.
This way the people who enjoy a good ol’ normal css can enjoy it 24/7, while the others who like sk3
and other lame maps can play that 24/7 on the custom css server.