I'm A Banana
Potassium-Rich
you fought drow who were equipped to the gills and, when you managed to defeat them, the loot that helped them to beat the crap out of your party went "poof".
In some ways, 4e's return to "monsters and NPCs and players all follow different rules" makes me paranoid that this will crop up again in different forms.
"No, the NPC can't teach you the Killstrike of Doom because...er...his hands fall off after the encounter. OOPS!"
I have enough faith to see it through, but we've already seen hints of a little of it. The Bugbear Strangler can use you as a human shield, you can't use anyone as a human shield because it'd be "annoying if you did it in every encounter."
But the reality of the depth of dissatisfaction in the game seems much different to me now than it did then.
I think this is absolutely true. They didn't really have to sell me much with 3e. They had me at "AC's go up, and monsters have Charisma scores."

With 4e, they've gotta sell me. I'm content with my game right now, no matter how much they tell me that I'm really not.

They're winning me over on some of the rules design, but some elements are very dissonant, and I can poach the 4e rules design as much as I poached the SWSE rules design, and keep intact what I want to keep.