Wasn't going to do this since I didn't get ahold of anyone regarding permission to repost but since I actually packaged it up etc I figured I might as well, and it adds so, so much to the game in the gui department it's insane.
What it is:
A compilation of OTHER people's work all grouped up nicely.
Portrait packs from Westeros
Westeros also contains some other graphics in it like traits but I don't know the original authors, sorry!
Gratianus minimap (light)
Here's some screenshots I just made at 1366x768 (click for big), as you can see the portraits alone are so much better but also the CoAs are much crisper (especially for the muslim 2-color shields which aren't in this shot)
Download and extract to main CK directory (overwriting):