The ONLY reason I'm even considering EE is because the GUI mod doesn't support 1920x1080. Which means tiny interface buttons and tons of empty space around the edges.
EE interface scales with the resolution, but it's also pretty blurry and dingy from what I've seen. Don't give a flying fuck about new content, it's all about the interface. OCDying hard.
Fun fact: researching the BG mod list, I came across one that makes enemy mage AI smarter and cheat less (
).
http://www.gibberlings3.net/scs/
SCS plays fair. I've made a fairly sustained effort to ensure that SCS opponents fight by the rules and don't use powers denied to the player (other than obvious things like dragons' breath weapons, liches' ability to see through invisibility, etc!) This is probably most notable for spellcasters - SCS mages don't randomly get uninterruptible spells, improved casting time, free Alacrity, or the like. (In fact, I've removed these powers from creatures in the vanilla game occasionally, though I haven't done so systematically.)