This game has been out for 9 days. It took me 3 days to get to 85 due to finals. After 6 days currently I am in all 346 gear with the exception of a 316 relic and 359 boots, and the people I play with are in similar gear. Recently we have begun ignoring boss mechanics and opting to aoe trash down like it was wrath all over again because heroics, while slightly challenging at an average item level of 327, are now complete jokes at 346.
I look on these forums and the official ones and either see people complaining the heroics are too hard, or that they're challenging and they want them to stay that way, but neither case is true. The only reason heroics were even sightly challenging at 327 gear level was because of mana issues, be it the healer running oom or the caster dps running oom and causing a fight to take too long. After around ilvl 337 mana pools were large enough and regen from spirit was high enough that the issue of running oom hasn't happened at all in the past few days.
I was enjoying cata for the first week, but I find myself getting bored again. I have 10 achievements left to finish for my volcanic drake and don't know what else to do after I get that while I wait for the rest of my guild to gear up for raids. Disappointing expectations of difficulty are disappointing. =/