Resistance. See above except it's conditions this time. GW2 conditions are a DoT effect that manage to deal lethal spike damage if someone doesn't have the right button to press that instantly saves them (skill and esports™ and all that). That's not proper. Instead of relying on more rock-paper-scissors, just reduce condition spam. Load dangerous amounts of conditions into directional/delayed attacks. Punish enemies and reward players for landing condition bombs as one would direct damage instead of making conditions something that stack miles high while you press all of your easy rotation buttons. Moreover, it's not like condition cleansing will be removed.
Not gonna happen. No sense in even debating if it is a good idea or not.
This actually excites me. Taunt is something that hasn't been done in this way before in PvP to my knowledge. A unique mechanic for once in an MMO. And your non sequitor about the rune or trait is just obnoxious.
1) Specializations will become meta and stock classes will be relegated to PvE-only.
2) Specializations will never take off because they may actually make players sacrifice something in order to fit into a specific play-style (like a role... in ROLE-PLAYING game). Due to this, the stock class will end up being superior in many situations because currently nobody gives up anything ever in GW2. Every skill and trait that you take is simply a bonus. There are no role-defining trade-offs in GW2 (which is why everything plays so samey in the end).
And in either case, the stock classes will simply not be getting overhauls despite numerous individual game-play issues across all of them regarding player responsibility and roles (as in there really isn't any of that which defines any given profession). Anet seems poised to abandon them for new specializations. Even if specializations are a great success, this just may lead to another level of tedium in GW2: "Uugh, I have to get through leveling this awful class so I can finally specialize!"
Straw man. You deliberately ignore the goal they are attempting to hit, which is more options, and a balance all around. This is entirely possible, and your cynical attitude is pretty tiring here. The negativity is unfounded.
All in all, 3.5/10. The good brought in by the Revenant is simply not enough to cancel out the foreboding bad concentrated in resistance, slow, taunt and the future of classes at the throttling hands of specializations. Revenant is really, honestly, pretty amazing, though--especially considering that it came from "GW2 launch + 2 years" anet.
You should go somewhere else if you are this cynical. The expac was just announced, beta isn't out yet, and you wrote a novella on how much it is going to suck. Time to reassess your priorities.