Jesus, everyone here makes it sound like dedicated LD decks are the most cruel and oppressive decks you can possibly sit across from. Hasn't anybody seen what happens when those rad LD decks don't draw their nuts? They tank so fucking hard that it's all they pilot can do to keep themselves from throwing all 75 into a toilet.
...Like, I don't think it fixes anything in Legacy in any fair configuration...
Not everyone plays Legacy... WotC thinks that LD loses them the kitchen crowd, and I believe they have far more data than you got.
Also, what is "the most cruel and oppressive decks you can possibly sit across from"? Most people hate when they are unable to play their spells for whatever the reason (be it manascrew, colorscrew, resistors, etc.), at least that's the kind of whining I hear most often. And from my experience, playing against Pox/Stax is the most annoying in all the Magic - games tend to last for eternity, especially Stax does nothing for many turns, and then the more lucky guy of the two wins 1:0 because he finally draws and sticks Delver/Goyf, LED/IT, Bloodghast/NetherSpirit or Elspeth/Mishra; this of course takes no less than 50 minutes and is full of action like "draw, go".