I'm kind of sad I've never gone. I'm probably going to be leaving wow when GW2 releases and I don't know if I will be coming back. Is it a great trip Aikouka?
It is once you learn the Do's and Don't's!
The two things that I would have rectified if I went again would be ensuring I get a close hotel, and not standing in a long store line again. When I was booking my hotel, I remember saying, "Oh, that one is a little cheaper and it looks really close!" Well, looking close on Google Maps is a lot different than when you have to walk it at 10PM after standing for hours.
You also want to plan out your events ahead of time, or else you may miss something. I didn't realize that server meet-ups were scheduled for certain times, and I missed the one for my newer server. Then I forgot about when my old server's meet-up was, and I missed that too. Fortunately, I think they have an app to help you plan stuff out.
Not that any of that matters since they won't have one until (possibly) next year.
But don't forget... BlizzCon isn't just about WoW!
EDIT:
As to BC, failure of the outdoor pvp material, pushing non-outdoor pvp towards the arena model, making a bad reputation system worse, retarded gating for heroics and raids, and the beginning of the epics for everyone and exploding char stats to hide our previous mistakes.
I think Blizzard's Outdoor PVP was amiable, but it was never a decent solution, and I'm not sure what they could have done. The issue with Halaa, Auchindoun and Hellfire Citadel were that the rewards were typically useless. The only one that people tended to care about was Halaa, and it still didn't present anything significant enough.
The problem is... Blizzard
needed to make them not significant enough. If they presented too much of a benefit, it would exacerbate any population imbalances on a server.
What's really interesting is when you look at the world PVP that took place in Vanilla, and consider that none of it really took place for any reason. Southshore vs. Tarren Mill was mostly just people getting bored and wanting to have a little bit of fun. It started well before the Honor System ever came into play, which meant there was no benefit at all to players.
There was also world PVP that took place around PVE events such as Lord Kazzak. Out of our 40 man group, a single sub-group was dedicated to killing any Horde that approached. It wasn't hard to do, because they were naked and trying to get Kazzak to kill them (he healed whenever someone died). People would also sometimes fight around Azuregos just to give people the debuff so they would get a shot at the boss.
I don't think "epics for everyone" is a bad philosophy either. It actually helps out everyone if you consider that it allows raiders to gear their alts or guilds to gear up newer recruits much easier. Prior to this, you typically would poach players from other raiding guilds or other servers. It was simply impossible to get geared players unless you did this as PUG raids weren't that common outside of Karazhan (at least for me).