What would you change in Heroes of Might and Magic IV?

I understand that many hardcore fans of the series hate the fourth installment. But for me (and I've played all the series from 1 to 6, even though I haven't completed all the campaigns), it's one of my favorites. Of course, there are things I don't like about it. And it's not that armies can move without heroes, or heroes without armies, or that an army can have multiple heroes (even all seven!); nor is it that a well-developed hero from a campaign, who has traversed many maps (and not just in the campaign, but, say, in a large scenario map), can destroy everything without an army. In fact, I like that; it's cool. What I don't like is having to choose which dwellings to build. (But I'm okay with the fact that not all improvements are available.) I'm really annoyed that they merged Inferno and Necropolis... In all the other parts, they hate each other! And suddenly, Efreet and Nightmares ended up in the castle of the Necromancers. Dwarves, everywhere, are lovers of mountains and snow (well, in the third game, they were neighbors with the Elves in the forest, but those were forest dwarves); here, they suddenly became warm-weather lovers and moved south to the Mages in the sands... Ballistas... that's just awful. Griffons went to the Elves - well, that makes sense; I never liked them as human troops. Some kind of shooting hives and mantises... And mechanical dragons are also a complete disaster... shooting units of the Necropolis - WHAT is that?! There were none of those in any of the series. The Mages (units) are too weak. I don't like that there are Minotaurs among the Wizard heroes. What, exactly, are Minotaurs doing as Mages?! They're supposed to be commanders. I'm annoyed by the Hobbits as heroes. Imagine a Hobbit hero, killing 10 black dragons with a single shot from a sling... And I haven't liked the Dwarves as heroes since the third part. Yes, I'm a racist; I can't help it! Heroes - Imps, Zombies... that's also a complete disaster. Orcs with pig snouts... And yes, I didn't get attached to any of the heroes in the campaign. The campaigns are generally weak.