One minor nitpick I have is just how short some of the videos are. For example the 'Behind the Music', you might expect based on the title that it's gonna go into the music of some of the shows/movies, the composers might talk, etc. Instead Junkie XL says like three sentences, plays a (great) preview of his JL score and then.. it's over, the end. Less than two minutes.
There's another one where it says the cast & crew of The Flash answer questions, but again, it's only Andy Muschietti & Ezra Miller answering one quick question each and then it's over just as quick as it began.