This thread is for anyone to post their thoughts on which units are overpowered/underpowered, and to ask for tips on how to use specific units.
Before I call any unit underpowered, I like to ask people how they it.
Archmage: this guy doesn't seem worth it to me. His attacks cause splash damage. But, I only ever see him use the ice attack, I've never seen him use the fire attack. He has low HP and he is slow. For the same cost I'd rather have a dragon or three more battlemages.
Technician: It would be nice if he healed everyone nearby. Manually selecting a target to be healed is too much micromanagement. Personally I never use the robotic upgrades. The ornithopter is effective, but all the other mechanical devices don't seem worth it.
Armored swordsman/magic armor: These guys are somewhat overpowered. You can almost always win the game by massing 9-16 of these guys and attacking the enemy base, supported by archers or battle mages. They can hack their way through swordsmen and demons like nobodies buisiness.