Well, I think we all want a decent Campaign with a decent storyline. Adds so much more replay value.
Regarding the units, I'd like it if there was more diversity. The original House of Wolves had really crappy unit designs. "What's the difference between a Spearman and a Swordman? The Swordman is better. What's the difference between a Swordman and a Knight? The Knight is better." etc. There should be balance and uniqueness in the units, to make everything more fun.
Say, Spearmen have high damage, but low armor, whereas Swordmen have low damage, yet high armor. Archers do more damage than Wizards, but Wizards have unique spells. Diversity. This will add more tactics to the game, and will prevent players from spamming Mounted Knights the entire game.
Last? The rarity of stone is, well, annoying. Might wanna add more of that!
