I'm for 2. as well. It seems to really help out all players, but only help BBEGs, so it does lead to a very minor power disparity. It would only help out our multiclassing, though, which I doubt aftercrescent would do for anything other than some BBEGs... Thats totally metagaming it, but at least we'd be playing what we wanted.
I've got some other proposals, as well:
4. Banning Polymorph, Polymorph Any Object, and Shapechange (I don't find Alter Self that broken, personally, except on Outsider forms for that stupid Dwarf)
5. Banning Gate for non-transportation use
The main reason is b/c aftercrescent could abuse these much easier than we could.