1. Im missing some sort of a special terrain type. We got regular walls, and regular floors. We got breakable walls and breakable floors. But while there are unusable stone walls, there are no unusable ground floor tiles (besides the minecart-rails).

In fact, it would behave exactly like the minecart-rails, but without the rails. Its something I really would like to see in the game especially considering the possibility of a map editor.

2. We got the priest who can heal, while the wizads summon golems. Also, drummer speed up nearby units. What about a special supporter enemy, who provides a special shield to one nearby, random unit, providing them immunity to any movement imparing effects for a limited time, but increases the damage taken by a certain %?

Would give some credit to traps with disabling abilities.