I'm not sure how you reserve an OT either, I always thought it was just people in the announcement/preview thread just sort of coalescing around a single person. Maybe PM a mod or something?
Either way, I think you've done a fantastic job with the news and info in the OP so far, so my vote definitely goes to you doing the OT. For a game like GW2 where so much is different from the rest of the genre, it really does need a good OT to explain why it's such a big deal.
If you want to use the "(R)evolution" thing for the OT, here's some thread titles for the Press Beta thread;
Guild Wars 2 Press Beta: Enjoy sunlight while you still can.
(alternatively; "Say farewell to fresh air")
Guild Wars 2 Press Beta: The floodgates have opened.
Guild Wars 2 Press Beta: Stick it in my veins!
Guild Wars 2 Press Beta: More on the MMO that gives you more.
Guild Wars 2 Press Beta: This is how the World (of Warcraft) Ends.
Okay, that last one is just too antagonistic and I really don't like the idea of GW2 getting labeled a "WoW-killer" when it's clearly a "Diku-clone Killer".
Yeah, those all kinda suck. =(
Hah, I like it. Best season of that show too.