Too tired to give proper feedback, but I love your ideas (in any case at least as ideas), I especially like the idea of hero capturing if that would remove some of all this "wounds" nonsense ... (Its not that I don't like wounds, I just don't want my heroes to have them! )
As for "wider selection of items".. I think they said they would add more of everything at some point, somewhere, so don't fear too much! (Though I am not too sure).
5: Why do everyone want castles and siege stuff, I agree that defending a city should change the tactical map, but I do not think castles and forts have to be there, I would rather see a barricaded field for combat, with one or two archer towers, so sieges doesnt go overly complicated.
3: what do you mean about children? I see no children in this game and marriage? were playing The Sims all of a sudden?
anyways, gl with your ideas
Edit: Obviously I like smiley's when I am tired