Geass is...Geass is what happens when the creators want to be bastards. The Setup had so, so much potential that got wasted in what can only be described as intentional sabatoge:
"Wow, this premise is really, really good!"
"Yeah, it's probably one of the best ideas I've heard in a while, and with CLAMP doing the characters designs as a hook, the fans are gonna love it!"
"You know what? This premise is so good, that I bet if we wrote the stupidest, shittiest, and most outright ridiculous plot, the fans would still eat it up!"
"A bet you say? You're on!"