While we are at a point now where consoles have actually caught up with, and in some situations, surpassed, the average gaming PC,
This is pretty wildly wrong, and the main reason people are upset about the porting of D3 to a console. There were pretty severe limitations in Diablo 3 that seem to be here because of the intent to port to console. I've seen the same thing happen with other games, they take a PC game and adapt it for a console release on the sequel, and the end result is a dumbed down game.
Take Deus Ex: Invisible War (which is old, I know, but applies here quite well). People complained that it was too unlike the original, and weren't happy about the reduced customization, smaller levels, weak story, and lack of multiplayter (pvp, deus ex is a FPS). The devs for that game at least admitted that the shortcomings were the result of it being a pc and console game instead of just a PC game.
Pretty much the same complaints exist in D3. Smaller levels, less customization, weak story, lack of pvp (for months and months, at least), 4 players instead of 8, 6 active abilities instead of being able to hotkey up to like 60. These things certainly could be the direct result of intending to port to console, but I suppose we will never really know because blizz will never admit it. If you ask me, the shoe fits.