It'll surely be a dead end, although I support curiosity in the dry times we live in as PS4 Homebrew Owners. The main issue with what you want is it's the whole reason why we cannot install Fake PKG Games permanently on our PS4, even if we already own the license officially, and it's a matter of Encryption, and Security, and frankly while we know how to delve into a PKG file to alter it's contents, there's still a lot of security put in place on some of the internal contents of a PKG file that prevents us from authentically Repackaging one without having it be denied by an OFW PS4.
Now if we can figure this out resigning License Data will not be too far off, but frankly there's a lot to this, and I've been out of the PS4 scene for awhile due to the lack of activity, so I'm no expert.