Aion's default is fine as it is, but there lacks a certain flare to it. It looks a little generic, and if World of Warcraft is any testament to this fact, it's that add on and mod creators can do some Tibia coins wonderful stuff in terms of design and layout.
I also find that this goes with the whole character creation thing I talked about earlier. Customizing your interface is another step to personalizing your experience within the game, pretty much playing it to your style.
Now, I am aware that NCSoft has already considered adding in this capability, and they may have by now, but this was never around in the closed or open betas, so I was a little worried.
The next one is something I refer to as "Casualness." You won't see this term in any gaming review site, but you'll probably see it a lot with me.
What is this talk of Casualness, you say? Breaking it down, it pretty much just means, "How easily can I put the game down without losing too much ground." Also, if you have any sort of connection with the latest in the gaming world, then you've probably heard the word "casual" tossed around a few times.
This is because developers have been catering to casual game-play in order to adapt to the growing mainstream representation of the industry.