For this one, I can't think of a good solution outside of having detailed spellbooks for each of your casting class (i.e. like Kingmaker). It does ruin the stream-line character sheet Larian's going for, but I think the details matter as it affects very real game mechanics.
Let me know if you think more needs to be adjusted. Or if you know of elegant solutions from different games that can help Larian accomplish this?
I just hope the UI gets a bit of an overhaul so other abilities are kept out of “spellbooks” and wizards are the only class that use spellbooks
