I think Freshmode 2.0 is good, if we remove the ability to rebuild any level, exchange heroes in a city (these two points are desires of HotA creators to see in their game, but they are not necessary for the core game), and the hint for finding a Mage Guild. In general, without points 1, 2, and 7.
The third point is debatable, but points 1, 2, and 7 are definitely unnecessary.