Oh wow, that sounds awful. o_o I'm guessing, what with Speed being so awful, a lot of the meta-game would end up pumping Speed up exclusively. Then again, Defensive Pokemon would also go exclusively for HP, which would be amazing on the other end as well.
"Amaura's been in my line up pretty much the entire game. Guess I'll start cramming protein down his throat for the next three hours." - barneyonfire
Rhyperior would get a bit more use I think. Wobbuffet might be better off too... Yeah, this would change a lot. I like the idea of how one small change like increasing the amount of EVs or adding an extra move could so drastically change the metagame.