1. New potion: there is already a magic explosion potion. But it would be nice to put a type of potion, where the explosion was either horizontal or vertical, activating with a mouse drag to select the range of the squares to explode. It would be good to accelerate the creation of the caves. It would be an drill-type explosion.
2. When a dwarf is driving and is attacking or defending, the enemy keeps advancing, so you have to press the direction key, but with the disadvantage that the dwarf turns his back on the enemy.
The correct way would be to attack or defend and that by giving the direction key, the dwarf would continue attacking, but walking back, not turning his back.
3. You could create a type of bridge with Mithril that could withstand the heat of the lava.