Modding

I understand that the user's question is generally about the lore...
Please briefly describe the plot and the timeframe, and then I can answer you.

That's absolutely correct. I apologize for not explaining in more detail right away; I didn't want to clutter the message with unnecessary information. I'm creating a mod based on the universe of Heroes of Might and Magic for the game The Lord of the Rings: The Battle for Middle-earth Under the Banner of the Witch-king. I want to transfer the atmosphere of Heroes into a real-time strategy game. I don't have much to show yet; there's still a lot of work to do. I want the player to choose only one unit upgrade path at the beginning of the game, and only after capturing a second castle, they can choose another. Accordingly, each branch has its own heroes, but I need one universal hero who would be important to their faction. Isabelle is a queen and has done a lot for the Griffin Empire and, in the future, for the Empire of Saint Isabelle. Orlando caused a lot of trouble for Agrail, and so on.
Please tell me how well I've chosen the heroes; perhaps, while it's not too late, I should choose others? There is no plot yet, and I haven't set any timeframes either. Approximately the time of the Northern Lords campaign. In the future, I plan to add factions from user-created mods (I remember I was already asking about copyright).

Dyrman, thank you; I've already seen this mod. I use it to choose models, and then in the editor, I open any building, assign it a hero model without animation, and get a model in a T-pose. This saves me from unnecessary work.