As great as the game is so far, this section is the most telling. It's also interesting because most of the videos I watched had virtually no lag whatsoever.
There's plenty of work to be done
As much as I would love to be able to plunge right back into the world of Tyria, ArenaNet still has plenty of work ahead of them before Guild Wars 2 is ready for launch.
Specifically they need to iron out the game's performance issues. I played on my powerful desktop PC and a capable gaming laptop, both of which struggled with the game on anything other than the lowest graphics settings. Cranking up the quality resulted in horrid frame rates, and massive world versus world battles between dozens of characters caused both systems to slow to a crawl. ArenaNet just needs to fine tune the game's engine, finding the right balance between beauty and playability.
Once they get that taken care of and iron out the sort of tiny bugs and glitches that plague any MMO beta, they'll be on the path to releasing what could be one of the greatest massively multiplayer online role-playing games the genre's ever seen. It's got the looks, it's got the mechanics, and most importantly, it's got the giant gaping hole in the ground I've learned to love.