I like the druid option...
- Charm monsters in battle
Isn't this already beastlord profession
Nature based spells like vines to hold enemies in place
Adding spells is rather straight forward and I don't see why this couldn't be implimented by the developers (adds more spells at least to the earth / life combo)
- Perhaps even (my favourite) SHAPECHANGE! which depending on level would transform the druid into a different things, bear, spider and onward
This is the only one that I don't think I could mod in the game, and I wouldn't mind seeing this spell type. It would work great with the earth / life combo or water / life / earth combo or something along these lines.
If you split the mage profession this should be on of the options or at least part of the summoner profession.