My guess is that it’ll serve as a reference implementation of the relevant part of MPE+ (a little confusing that it lives there, since MPE and 14-bit control are orthogonal)…
Unless dissuaded, I intend to do my long-ago-proposed whistle-stop tour of the VCV codebase once V2 is out, and I’ll definitely write up how the 14-bit implementation works which, if not a standard, would at least serve as a prose citation rather than a code excerpt…