Upgrade or alternative upgrade?

It’s pointless to speculate now because there probably won’t be any more mods or patches for Heroes 5, which is a shame. The game is just too old. Although, there are fans who still create mods for Heroes 1. If Nival had provided the game’s source code with the ability to convert units from, say, 3dsmax, then there would have been countless mods, and any idea could have been implemented.