I actually liked the Amrath/Invade-Shavarath-and-get-cool-rings-and-potions quest line; since Turbine has been beating the Xoriat Horse dead since release.
However, hardly anyone ever plays that shit...I think I've seen 1 or 2 TOD raids up on Khyber in the last year, and of course they never fill and never get far (YMMV, I'm not on all the time). I highly doubt unless this new Archon stuff gives loot that makes Epic Necro4/TF look like Waterworks loot (which it wont) that anyone will play it for more than just the novelty of doing so.
I'm sure they'll jack the Warlock up - I'll reiterate my past points: It'll be like DAOC's Warlock, super overpowered and then gets nerfed so it is like a 2006 Bard and you'll rather have your penis flensed by inbred and blind Japenese twins than to play one. I might try it, just for shits and gigs, but it'll be another Pale Master Effect and have 4/6 people in your PUG try to be WF Shirardi PM's.
Epic Vale SHOULD be good...I mean, the Vale and the Shroud are the GREATEST accomplishment Turbine had made, I'd expect them to put SOME effort into it...but, we've all seen the TOEE disaster.
I'm still feeling underwhelmed and uninspired. The 30 cap will be meh, I don't really TR to begin with.
How about just giving everyone Half-Dragon Neutral Evil Psions and calling it a day.