It's a huge work, it won't happen today, and probably never, but it's interesting to think about it.

I was thinking of forking Mastering Bitcoin and insert Programming Blockchain contents in a concise way to the appropriate places.

Rationale

Mastering Bitcoin desperately lacks any practice and code, which is the strongness of Programming Blockchain. This would make it easier to keep the Programming Blockchain up-to-date and correct to the last little details, since the contributors of Mastering Bitcoin is unprecedented.