I'm gonna be that guy and say that I'm not excited about this at all. Here are the reasons:
(1) no villains
(2) It's the third movie centered around Twilight. Enough Twilight already! It's not mlp anymore, it's Sailor Moon, where the rest of the girls are just Twilight's entourage.
(3) They are retreading the season 1's story of Twilight being a frindless dork. Why do we need the same story?
(4) Sport themed movies are notoriously hard to make good.
(5) With this they are obviously closing the door for the pony Twilight. Once this one gets accepted in the circle, there will be no more need for the pony to come to the human world.