It's amazing when you see these nostalgic fanboy nerds get into an absolute frenzy over the visual style of the game.
Blizzard has released just tiny fragments of the game through gameplay footage and screenshots, but by the crying you see, you'd think they already released the game.
Stop pretending like you won't play or enjoy the game. Who are you kidding?
The reason you like dungeon crawlers is the same reason that half the population, including myself, likes dungeon crawlers.
You play a character, you get a big hard-on when an item drops with a fun new color and unknown stats, and you try and make your character bigger, stronger and tougher than everyone else's character, so you can kill things faster and get more fun colored items.
Before you know it, you'll be following this pattern, while at the same time bombarding the forums with reports that all the other classes are stronger while yours sucks.
Rinse and repeat.