Just had my first decent go of 5V5 and is it just me or are mesmers fucking ridiculous? Constant healing, status effects, greatsword wielding, multiple persist-after-death copies of themselves bastards! (I'm just annoyed because they're so whippety and hard to kill)
I do think theives are seriously broken though. Just played with one who was impossible to kill. Every time he went down he seemed to have an ability that could put him into stealth, teleport him a fair distance, and was ready to use as soon as he reappeared. Even with my warriors frenzy skill (+100% attack speed) I couldn't finish him off. At one point there were three of us just solely trying to finish him off to no avail.
I'd also not seen any of the cash shop stuff before due to missing the last BWE, so had a play around with some of it. The transmutation stone is awesome. The minis would be awesome if you could make them fight, but I'm glad you can't because that'd be the end of all my money. Generally they seem like the exact sort of cash shop items I like: purely cosmetic and fun, but with enough effort put into them to make it worthwhile. The only one I don't like is the extra bank space one, and only because I don't know if you can get that ingame or not? If it's a cash shop only one then that sucks.
Other than that the game is running much smoother in PVE. WvW is allright untill you get 20+ players on the screen then it's a slideshow. Though that's probobly more a deficiency with my computer than anything else.