Cognitive Genome
Aion also has a really sweet feature - say, you get a piece of armor with really awesome stats but it looks like s**t. You can transfer the stats over to a piece you already have that looks better, so you can have armor that looks awesome and has good stats. This will help a LOT to create unique looks with equipment, as not everyone will look the same at high levels (whereas in most other games, they are all wearing the best armor and therefore look alike).
You'll be at the end of the game with your most epic looking robes, moving your high stats over to them when I'll run up to you.
Tanking like HUEG dragons and s**t, in my max stat'd crappy looking beginner's gear that everyone gets free.
Just because that'd be hilarious to do.