The Dirge Bard in Ultimate Magic has an ability called Secrets of the Grave which allows him to add necromancy spells from other spell lists to his own. However, even when selecting these spells, they don't then appear in the Spells Known list and you can't select them as your known spells.
Okay, so I'm not even looking at this, and know exactly what is going on. There are two methods to handle this.
1) You select any spells you're allowed, and the spell list will always show up for the selection (and any books you load, this list is always working).
2) What you want [Each spell must be manually coded up by hand, will not expand without support]
#1 keeps the experience consistent, #2 puts a contract on the data team that they will NOT be able to keep up with.
If you want #2, let me know. But you'll need to give me every legal spell allowed from every source book we currently support. (Talking about a couple hour project to set it up properly)
OK, I think I understand. #1 it is, then