Joshua Randall
Legend
even just randomly picking a class in a game like 4E and just sticking with it and having a, roughly, just as powerful character as someone with complete system mastery is a pretty cool achievement and that's probably my favorite thing about it.
There was a guy in our local area who, because he was a weirdo contrarian (even moreso than me), insisted upon creating a character with 14s in every ability score (or whatever the closest point buy got to that) and randomly rolled for powers.
And aside from his attack bonus being 2 points lower than expected? (Which got compensated for with smart gameplay (combat advantage) and situational buffs from the Leaders) -- aside from that, his character was completely effective and fun at the table.
As you said -- that is a HUGE accomplishment for any game system that somehow ALSO rewards system mastery!