Inscription deserves an overhaul/update. If I was able to make some changes related to spellbooks and inscription, it would be the following:
1) Add runic scribe pens to increase properties (would be nice to craft up to max 30 SDI, 10 DCI, 8 int, +15 skills, etc.) and increase chance for super slayers with the runic pens
2) Add new recipies (other than the Scrappers) that make other types of spellbooks, necro books, or mysticism books with other desirable attributes (would require peerless or SA ingredients). How about a Tome of Deceit for a necro craftable artifact book (30 SDI, 8 Int, 5 LMC, +15 Necromancy) or something like that.
3) Leave the lack of durability as-is for Scribe crafted spellbooks
4) Make spellbooks imbuable (able to add SDI, slayer, DCI, mana increase, int increase, FC, FCR, LMC, LRC), but then add 255/255 durability so they permanently wear out like all other imbued items (non-POFable).
5) Add other slayer types to craftable spellbooks including the Mondain's Legacy slayers (i.e. Vermin, Flame, Ice, Mage, Bovine, Bat, Wolf, Fey, Bear, etc). These would be regular slayers (non-superslayers).
That's what I would add to breath new life into inscription.
-OBSIDIAN-