The only thing i'm worried about is hitsounds, would not be surprised if i had to redo big parts or if someone want to do it!
A-a-and, I don't know how, but you messed up with the storyboard, so almost 100% of the time of playing the background was black.
Oh, I see it. Go to [design] section and on the right side of the screen choose each element and press Delete-button on the keyboard. After that, open the folder with the map and drag background.png in the Editor. Hurray, everything's fixed!
Some of combo-colours look similar. It's mistake, so delete repetitive ones. I think Blue, Green and Purple are pretty enough c:
Yo, I do very like your map and cannot not to be happy because community is still making mlp-maps! I'd like to help and glad to be useful!
(all what I wrote is 110%-imho, you don't need to agree with me)