I was asked to look at the storyboard so here I am \o/ I only have a few small easily fixable things for the sake of the optimisation guidelines - https://osu.ppy.sh/wiki/en/Ranking_criteria#guidelines.5
At 44 seconds, the blue and yellow characters are out of bounds on the left for a bit. You can move their first scale and movement points to when they're centred on screen to fix this. Here's also a solution inside the .osb
https://i.imgur.com/JRAmt0t.png
For the flip.png sprite, there's a few redundant commands to change inside the .osb file. The movement command on line 63 happens in the middle of the tweened movement command that happens on on Line 62, you can delete line 63 to solve this.
Line 66 and 67 commands are also redundant as Line 65 fades out the sprite before they happen, you can remove them. Here are the unnecessary commands highlighted:
https://i.imgur.com/Y5b8BGu.png
01:08:608 (144) - I think the crash/cymbal sounds are uniquely loud enough here to warrant finisher notes, and i like the ending finisher because the song echoes away from it. I agree that 01:11:142 (150) - should be removed though
I think I deleted those a while back, you might have to redownload the song. Those are super rare founders edition DLC storyboard sprites