Talents are hardcoded AFAIK. You can monkey around with skills but not tallents. Pretty much anything like this you can mess with is found in the excel files when you unpack main.

My D:OS Mods:
Dunamis - A 15 hour Adventure Mod for D:OS EE

A Necromancer's Crusade - 10 hour adventure mod for D:OS EE

4 Character Creation (EE)