Whatever system is adopted, there will always need to be an "owner" to arbitrate on whether a proposed obverse or reverse type is, or is not, a uniquely defined type. For example, Freeman did not distinguish between the 2 obverses used for circulation and proof 1953 pennies, the only difference between them being a single additional border bead and thus a slightly different alignment of legend to beads. Gouby's Victoria reverse ja is so minutely different from reverse j that some may argue that they're essentially the same. Freeman's George VI obverses 1 and 2 differ by the minutest of legend to tooth alignments, so minute that Gouby calls them the same. Good luck (and thick skin) to whoever is prepared to take this on.