I've been playing Neverwinter Nights 2 and Icewind Dale 2 for the first time, and it's got me thinking about a whole lot of things I like and dislike about the UI in general
One of my biggest pet peeves with those two titles in particular are the spell icons; they're way too overly elaborate and excessively colorful to the point where they're difficult to understand; I always have to wait for the tool tip to be sure of what I'm casting.
Just to illustrate my point: :
The Baldur's Gate icons on the left are simple, elegant, and color-coded; I can understand what they are at first glance, while with the NWN2 icon's I can only guess maybe one or two of them off hand. It looks like a messy mish-mash of artwork when bundled up like that. Basically, I'd prefer it if Project Eternity leaned more towards the simpler iconography for the UI in general.
It might be a very minor detail, but I feel it's still a very important part of the overall aesthetic and functionality of a game. I studied in graphic design, so I'm a little sensitive to that sort of thing.