[Spitfire333]

I like weather teams too, Fire, and I know not having Snow Cloak and Sand Veil is annoying, but in the case of the Swift Swim clause, it drastically helps the metagme. The fact is that, in the case of the SS Clause, it stops Rain from becoming overpowered. Its abusers are more dangerous, and Politoed is simply better than Ninetales and Abomasnow. The Sandstormers are a different story, because, even through Tyranitar and Hippowdon are great, they only have 5 Pokemon that gain speed from Sandstorm, as compared to 35 speed boosters with Swift Swim.
Evasion is horribly broken, and we'll not be using, unless of course, you want a Sand Veil Choice Band Garchomp murdering every team it comes across.