I really like the vehicle combat, even Occulus.
IMO the thing I didn't like about Occ, the thing that make it clunky is the drakes' abilities, not the mechanic itself.

(Honestly, if you can't handle three-dimensional combat, you suck. Although, I will admit that blizz needs to put a little more polish on the way areal mobs position themselves during combat.)

The drakes' abilities were numerically sensible but just not that fun. The green drake was was the best of the three but even it was only okay, not good.

Other vehicle stuff is totally awesome. I'm a big fan of the argent tournament for one. The change of pace is really fun (and the music is completely awesome).

The quests in Storm Peaks where your ride this or that protodrake are really fun (like the one where you rescue npcs from the Sons of Hodir, that was awesome, or Drakkensyrd which isn't technically a vehicle quest, but is still the coolest thing ever.)

Honestly, vehicles are a great addition to the game. This is a GAME. I think the people who say they want the game to only ever be about using their own class abilities, are nuts.

Anyone remember the Netherwing races back in BC? The mathlete keyboard-turners probably hated that too, but I thought it was the best thing blizzard had done up to that point in WoW.

Diversity in game-play! Yeah!

;P