What is your opinion about Heroes IV?

The gameplay balance is almost non-existent in version 4. Some units and heroes become so overpowered that they are essentially bugs. For example, a druid from the Castle faction can single-handedly destroy a castle, like the Quicksand Fortress. The financial aspect is also flawed: the Haven faction is incredibly wealthy, while the Dungeon faction is expensive and unprofitable. But overall, if it were further developed, it could have turned out great!