Haha that's fine, and I like to reinforce, or reword what I said/thought earlier too.
I do agree that the Hero/ine should NOT be able to pick mage, as:
1. You already have the story laid.
2. Their current portfolio looks like they have mainly physical attributes.
3. Which means you won't need to redress/draw.
So we're clear on that, the Hero/ine is in essence a Fighter/Thief + Leader/Cleric/Bard, etc.
My line of thought and suggestion is, combine all the 3 trees, for the PC, rename it to Hero, maybe? And let them specialise via their skill choices in the tree.
This will let the PC decide if they want a melee babe, or a sharpshooter stud
If that doesn't work, I have looked at the 3 choices on hand, and agree they massively fit the base roles. So looking forward to any outlooks!