Not sure if troll or serious. Crusade is a hell of lot better than classic, and will be more so than season of mastery. This is a fad that’s going to die out in record speed. Enjoy your new gimmick while you have it. In probably 3 months, most of those realms will be empty.
Personally, unless they host classic with the crusade patch, I’m staying in outlands. The crusade patch effectively has the changes classic needs. Cherry picking changes is stupid and never going to work out. Classic is simply far too flawed to compete with crusade or wrath. It needs tons of changes that it won’t get with a “nochanges” mentality or even some cherry picked ones. It needs the crusade patch.