I couldn't stand playing THIS for even a month....
And it was a long time ago....
And remember why the beloved 3DO died!!!! From an "unsuccessful" experiment (sorry, fans of the game) and a bunch of add-ons for it, made to bring in at least some revenue... but it seems it was all in vain....
Yes, the game was released in an unfinished state, but this can be fixed with patches, which is what happened later.
Since we're talking about the advantages and disadvantages of the third part compared to other versions:
the fourth surpasses the third: definitely in terms of music;
in my opinion, with a more convenient interface;
better graphics (objectively) and creature design (subjectively);
a much more interesting magic system;
a skill system;
the "development fork" seems like a successful solution to me - an advantage, in my opinion, compared to all other parts of Heroes, where there is no "fork" (in the later, non-3DO patches, the alternative choice was made obvious);
the presence of a caravan.
There are also very controversial points that I can't call unambiguous advantages, but they are still interesting.
I compared it to the third to: firstly, not stray from the topic, and secondly, to show some "experts" that the "disgrace of the series" differs in many ways from the third part.