Evolved over a couple of years, and that D2 is waaaaaaaaay bigger than D1, and LoD simply threw in lots of new "features"
the likelihood of a JG evolving is remote, although there are any number of noble efforts in progress.
The Diablo 2 Encyclopedia is one such effort.
However, like JG, there will of course need to be feedback by those who can test and verify the various and and sundry skills and formulae.
Occhi, Corporal of the Legion
Pygmy's Pike Platoon