I think there is a lot to be said of playing EQ for the sake of playing EQ. Just because CC doesn't offer upgrades to a level 60 doesn't mean that level 60 isn't going to have a hell of a good time for many hours /played on an alt in that zone.
Also, I think the "errybody has a 60!" thing is quite an exaggeration.
http://p1999pop.dmsimard.com/db/Levels ... 5500+ characters seen on the server and fewer than 300 of them are 60s, even though we have a bare minimum of 800-900 different actual players on the server every single night. 3/4 of the characters on the server are sub-50!