It was amazing! I actually out loud asked "What the actual holy Celestia is going on?!?!?" near the end of part 2. Those who've seen it'll know EXACTLY where I said it at and (hopefully) will understand why I said it.
That said, I am slightly disappointed that there weren't as many lovely songs as before.
Any bets on new baddies/recurring characters/new Princesses for S5????
New baddies: Yes!
Recurring Characters: CHEESE SANDWICH! Oh please, please, please!
Princesses: .....What if Cadence actually does have a filly or colt of her own??? That counts!