I haven't had a chance to play GURPS 4e, but I like the rule changes ... mostly minor, but making advantages/disadvantages/powers/skills consistent across worlds is a big win.
Unfortunately, as a result reading the books is like drinking from a firehose, which could scare off new players. _GURPS Lite_ is a useful tool, but I wish they'd put "normal" and "super" advantages/disadvantages in separate sections instead of marking them with an icon ... it would make creating a "normal" person easier.
"On two occasions I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a question."
- Charles Babbage (1791 - 1871)