Greetings, Pierre!
This is my request for a near-future version of KotC1. I'm pondering trying the Ironman No Scribe Scroll achievements, but felt annoyed that even using Share Spells prevented me from getting these achievements. Wizards get Scribe Scroll automatically at level 1, and not being able to Share Spells prevents them from using one of their class features and a notable reason why I like KotC. I propose these alternatives:
1: Wizards instead get a bonus feat at level 1, just like Fighters.
2: Share Spells still allows the obtaining of Scribe Scroll-related achievements. (Preferred since it's more fun that way.) I know this allows Clerics with the feat to share spells, but that's also part of the point. The main gameplay ease was using Scribe Scroll to make tens of spell scrolls and effectively never run out of magic, NOT conveniently sharing research notes. Also, the 3.5 explicitly allows preparing spells from borrowed spellbooks, which is sorta what Share Spells does. (I know it puts the spells in another caster's repertoire.)