Rain stall flat out dies without permanant rain. No, I'm not going to run stallers who have to run 3 moves and rain dance. I'm not going to run a parasect who loses the ability to stall amazingly well after the eight turns are up. Rain offense will live on, but any other play style created from an OU drizzle will die. This has already been discussed however, and it seems like people have agreed that anything that isn't offensive rain doesn't actually matter because it doesn't see play. This is ignoring the fact that drizzle only became available on a standard mon this gen, but yes offensive rain is indeed preferred to rain's other options.
Valkyries brought this up earlier, but can someone detail all of the differences 8 turns of rain brings in comparison to unlimited rain? Being unable to counter kingdra in inifinite rain won't allow you to counter him in 8 turns. Natt is still 3HKO'd by a Specsdra under the rain, infinte or not. Kabutops still manhandles things. Ludicolo still isn't countered by Nattorei.
Yes, one turn of setup is a big deal. Rain dance can be taunted, and with only eight turns of rain, the weather can be stalled out with appropriate switchs ins and proper prediction. While your opponent is using rain dance, you can lay down stealth rock, nab that speed boost, get off that shell smash (although I'm pretty sure that if Electrode sees a Cloyster, he won't be an idiot and allow for free setup), etc.
But a good rain team still won't stop you from setting the weather up. MH Tornelos can still run Rain dance. The same MH Tornelos 2HKO'S NATTOREI with Specs Hurricane. Max/Max specially defensive Natt takes 52.8% - 62.2%. Life orb Tornelos still has a chance to 2HKO, dealing 45.5% - 54%. What are you going to switch in? Tyranitar to wall and change the weather? Not a counter thanks to hammer arm. Hippodown? Still 2HKO'd by Life orb timid hurricane. Then Tornelos uses rain dance again. Blissey? Also dealt with thanks to hammer arm.
But this is all theorymon. Tornelos can be picked off by any pokemon while he's using rain dance. Great. Now how do you stall out the incoming kingdra, ludicolo, and kabutops that will be showing up? What do you do to counter them? They apparently cannot be countered now. So during those eight turns, what are you going to be countering them with? Sac a poke and then switch in tyranitar? Then kill off the rain dance user who tries to set up again? Sorry, but that's unacceptable. Already, it is considered a problem that you HAVE to run Tyranitar and change the weather in order to beat rain. So why should I need him even when rain isn't infinite. If you're stalling rain for eight (or six) turns straight, then what specifically does infinite rain do to to keep you from stalling them at least a little bit? What are you going to be doing to the eight turns of rain that allow you to stall them out?
I make this post because I'm honestly a little confused. If rain is broken now and impossible to counter outside of weather changers, then how IS it possible to counter under eight turns? Sure, rain teams get gimped when fighting sand and hail thanks to the fact that snow/t-tar/hippo only have to switch in once and then don't bother switching back in until you set up rain again. But outside of those three? You aren't going to be switching for a full eight turns, that doesn't work against any decent player. Ever. The only glaring difference I might see is that rain is now taking out 2-3 of your pokemon instead of your whole team before they have to set the rain back up.