About changes and/or combining Hero Specializations.

As I understand it, this program itself is in an executable file, and it runs a set of maps through it. If you need to add heroes from NHF to your map, you just need to add it to the executable. As I wrote earlier, complex special abilities, like the one mentioned above – a combination of Nibros and Krag's special abilities – cannot be created using standard scripts.
In my future map for Kaspar, I initially wanted to give him a combined special ability – his tent ability plus a special ability for liches (like Lucretia's ability for vampires), but I abandoned this idea because it cannot be done using standard scripts, only through manipulations with the exe file. Maybe I don't know some nuances, and it can be done more simply).