I didn't much care for PvP, I tend not to enjoy people's attitudes when they have a crying fit or nerd rage over pixels =P As fun as WoW's pixels are.
I'm much lore and raid oriented, though I pull serious hurt in PvP when my bf pulls me in.
Mostly I miss when people respected the fact you got your chaarcter maxed, or you got that legendary weapon from that retarded hard quest line, or when they weren't all gimmie gimmie. The DK's started this. ANd I agree, things have plumeted since (though in Pandaria this has changed a bit in at least end zones/encounters).
My biggest nitpicks are specifically with the hunter class. Just now we finally have decent AoE after they took away Volley. =/ Like, wth, Blizz? And then they removed feeding your pet to keep it happy, then removed needing to tame it at certain levels, and now removed it's talent trees. So...now they HAVE made your pet a simple tool. I played it in a sort of state; I was a epic ranger with my beloved companion beside me. And that's how I still treat it.
But jeez..hearing some of the noobs tell it, they think they have it hard?
Molten Core vanilla when you camped it for days as a guild group...that was hard. Ragnaros taking well over an hour while cycling tanks and healers...that was hard. Mobs actually killed you back then, you couldn't loldps your way through anything. bah...I'm ranting a little. Sorry ^^;