Adept is interesting. I think it ranks over Magewright for 1. Having actual support 2. Getting access to its full list 3. Even if it didn't, its spell list is generally more relevant. It's probably ranked too highly relative to other T4 classes, but part of the problem is how low ranked Paladins, Rangers, and even Fighters are. Fighters are less that half a tier from Monk. That said, the only T5 class I think actually has a chance of surpassing it "easily" is a Truenamer that can actually get consistent access to its abilities. I'd rate Adept 4.5 if I haven't already. I think it sits right at the border of T4.

I think the same holds true for the Expert. Is the Expert good? No. Does it hang around the same area as the CW Samurai thanks to its custom skill list? I think so. I'm actually comfortable with it sitting about where it is now.