Forgive me, I'm just not following your OP...

First off, are you calling the different Disciplines "Weapon Classes" now? That's pretty confusing...why not just call them Disciplines like S-E does? I am aware of the thread you have quoted in your sig, I'm really asking, why change the name?

Also, are you proposing the way to add uniqueness to the disciplines is to make all their skills...more like each other? By adding an AoE toggle, and revamping existing skills (mainly MRD), you realize all you're really accomplishing is removing some of the uniqueness we currently have? How does my PUGs Concussive Blow going AoE differ from an ARCs Puncture going AoE? As Xatsh said, every class has at least one skill that can AoE, I don't see why they'd all need to.

No offense, but your suggestion is a little off base. The problem with class uniqueness isn't centered on or even in the same vicinity as whether or not our skills can toggle an AoE version.