I wish we had more informed opinions about this aspect as to the following questions:
- Can spells used by NPC’s be used by players?
- Does this cause bugs or additional issues?
- How time-intensive is it?
- Do they have to go through a full round of devs in terms of lore, etc.?
If its easy to do theres absolutely no reason I can see to not add a TON of options. I would love to see astromancer spells from the Nighthold boss, additional druid forms, etc.