I loved it, best episode evea 10/10.
Okay seriously though I loved this episode. Not just cause it means the drought is over, though thank the sisters for that. But also because it features Best Pony, being Best Pony. I loved the new outfits, the new Background characters, and Sassy. Well I didn't 'love' her per Se but she grew on me and I'm glad she turned around at the end.
Also yes, Wtf with the fat pony at the end. Massive Wtf. I was yelling at the screen: 'Wth is that?!'
Now I want Goth Pony Plush.
Also apprently it's been confirmed that Goth Pony and Happy Pony are sisters. So their like Proto Celestia and Luna.