What would you like?
I would love to see a modularisation for certain "parts" of the code.
In almost all of the Projects linked to previous WWDCs, Apple split their code into separate and local packages.

Creating modules for UI, Services, etc? Might be a good option.

Why is this useful?
Modularisation declutters code and makes it more accessible for testing, debugging and further development. The code is very clean and has a distinct purpose.

Alternatives considered
Leave the code as is. I'd be happy to split the code into modules. Feel free to drop further suggestions!