Rather than continuing to feed scholar BLM and WHM spells, I'd like the whole unique spell list idea. I'd go further than just giving scholars gain or boost spells(RDM and WHM respectively).
I'd take the bard song list and strip the party effects to single party targets. Things like ACC, RACC, MACC, MAB, EVASiON, ATT would become single casted spells for moderate effects (what's a tier II or III bard song effect?). Gaining 10-20 points(debatable) in any of those traits would offer significant returns.
Balance, keep these from being Accessioned like enspells2. Keep them high enough so that they are unique for scholars. And allowing them to stack WITH bard songs would be nice.
I, also thought of a "spell" that increased the potency of a party members next job ability similar to RDM's saboteur. Basically, increase the /JA duration or strength.