Rules to Story - Let's Play Mechanic Discussion Game

The rules to thread thing got me to thinking that maybe we should have a chat about specific Rules and what we feel they bring to a game.
Maybe use an example of a rule to start.
System: FATE
Rule: Fudge Dice
Okay, so the one I'm going to pick is Fudge Dice. With Fate being ... well pushed by Evil Hat and anyone else who currently feels like jumping on a bandwagon (this isn't to slight FATE or E.H but more as a comment on people going, "Oh, that's the big thing I will make my game using that."). If we look at the curve for 4df then we get.
Chance of very high result (+2 or better) 18.5%
Chance of acceptable result (-1≤m≤+1) 63.0%
Chance of hitting trait level exactly (m=0) 23.5%
Chance of very low result (-2 or worse) 18.5%
So the goal of using FUDGE dice is really to limit the ammount of variance that goes into the game. Does that drive a lack of huge gains and huge failures? FATE is sold as an actiony adventury system, does it by its very nature drive the players towards aspects as a way to create that huge success margin (if +2 is considered a high result then starting at +2 is worth noting).
Thoughts?
Maybe use an example of a rule to start.
System: FATE
Rule: Fudge Dice
Okay, so the one I'm going to pick is Fudge Dice. With Fate being ... well pushed by Evil Hat and anyone else who currently feels like jumping on a bandwagon (this isn't to slight FATE or E.H but more as a comment on people going, "Oh, that's the big thing I will make my game using that."). If we look at the curve for 4df then we get.
Chance of very high result (+2 or better) 18.5%
Chance of acceptable result (-1≤m≤+1) 63.0%
Chance of hitting trait level exactly (m=0) 23.5%
Chance of very low result (-2 or worse) 18.5%
So the goal of using FUDGE dice is really to limit the ammount of variance that goes into the game. Does that drive a lack of huge gains and huge failures? FATE is sold as an actiony adventury system, does it by its very nature drive the players towards aspects as a way to create that huge success margin (if +2 is considered a high result then starting at +2 is worth noting).
Thoughts?