Which race would you add to Heroes?

Mechanics and Gnomes: 1. Gnome Craftsman - Gnome Blacksmith (weak, but repairs machines) 2. Gnome Footman (resistant to magic) - War Veteran (resistant to magic, retaliates) 3. Throwing Axeman (penalty for ranged attack, no penalty in melee) - Musketman (no penalties for ranged and melee attacks) 4. Mechanical Spider (mechanism) - Spider Golem (mechanical) 5. Cannon (mechanical, area attack) - Siege Cannon (+destroys walls) 6. Air Balloon (mechanical, flying, ranged attacker) - Airship (mechanical, flying, ranged attacker, no penalty in melee) 7. Dragon Golem (mechanical