I'd suggest we should add a sound editor and improve the paint editor because I believe that will make Snap more accessible and convenient.
Snap currently doesn't have a sound editor. I'd say we should have one because that can be very useful in editing sounds. (Sure, you can use code to change pitch and volume, but what if you only need a certain part of a sound or want to apply a fun effect such as echo or robot? See Scratch's sound editor to understand what I mean.)
Also, the paint editor really needs improvement. It's useful, but it's quite inconvenient compared to Scratch's paint editor, which has more features and ease to use, therefore more accessibility. Updating Snap's paint editor to make it like Scratch's will make it less difficult for users, especially those who want to make detailed costumes.
Implementing these features in Snap will make it more convenient to use when it comes to creativity and ideas. Hopefully they can be added soon in making Snap better.