Rain is the BEST weather to use just because it doesn't have negative effects for any pokemon besides halving the power of fire moves and just help a lot of pokemon to be strong enough to be viable in OU like Toxicroak... Of course, the nerf does hurt some pokès that relies on recovery just because eight turns are not enough, but are at the same time more than enough to almost sweep a complete team with an offensive water pokemon... Also, now the weather wars aren't going to be as exhausting as before, which means that you can still use effectively your team even if your Politoed got kicked early...
To conclude i just think that Weather is going to change just to adapt the new conditions of the metagame and isn't going to be as used as before just because a weather team is going to need a lot more brain to use it than before...
To conclude i just think that Weather is going to change just to adapt the new conditions of the metagame and isn't going to be as used as before just because a weather team is going to need a lot more brain to use it than before...