I'm just gonna throw all my ideas out in one post, please give feed back.
1. Scientist: Deals poison damage, has a range of 650.
Kael model..
Multi-Heal
(heals multiple targets, every level increases recovered life, every 4 levels increases number of targets, 20 levels)
Radiation Leak
(creates an aura to damage nearby enemies, every level increases damage dealt, 10 levels)
Atom Bomb
( calls a nuke, every level increases damage dealt, 10 levels)
Electric Tazers
(summons a tower in location that deals lightning damage, every level increases damage dealt, every four levels increases number of targets, 20 levels)
2. Inventor: Deals explosive damage, has a range of 650.
Jaina model..
Quick Lumber
(summons a level 2 mill instantly, cooldown 60 sec)
Quick Wall
(builds a silver wall, cooldown 60 sec)
Construct Robot
(summons a siege golem, has fortified armor, every level increases life, damage, and armor, 15 levels)
Spawn Trap
(summons an explosive device that detonates when an enemy approaches, every level increases damage, 20 levels)
3. Warden: deals peirce damage, has a range of 650.
Maiev model..
Boomerang
(throws a boomerang hitting multiple targets, each bounce decrases attack, every level increases damage, every 4 levels increases bounce targets, 20 levels)
Critical Hit
(gives a chance to do X times normal damage depending on level, every 4 levels increases multiplyer, 20 levels)
Multiply
(copies the warden each copy deals half the damage the origional warden deals, every level increases duration, every 4 levels increase copies, 20 levels)