I think I'd take it, especially if I was told I'd be able to be immortal eventually. Yeah, I know, this anime was all about how being immortal would really suck, but.

As for the Geass itself... I dunno what it is. Maybe something similar to Lelouch's, because I like having control, too... >_>

Or maybe something that just makes people want to agree with one another and not want to fight...? *shrug*