I say, give 'em all the new suits...this way, they'll be a level playing field. Personally, I'd take it a step further, and would make steroids
mandatory. This way, we get to see huge, hulking beasts jumping halfway across the pool before 'roiding out, eating the opponent in the next lane, then gliding to victory in their technologically-advanced swimsuits. Now THAT'S entertainment, dammit!
(I think steroids would do wonders for baseball, too...oh, wait...)