There's no room for hacking and learning with Apple. You don't dare waste their time working on projects... from now on you work on products and products only.
If you aren't incentivizing and monetizing your down-time then you don't deserve to be using Apple's next-level code enabler, Xresource4.
Why stop at down-times? How about lunch-times too!?
I am now motivated to build a dynamic bread themed vegetable maximisation device and then integrate it into my revenue stream.