+1 to quest-driven crafting only. The Sussur Bark quest is good. DOS2 crafting was overwhelming and overburdened the inventory with crafting materials.
If Larian decides to add the ability to craft scrolls/potions/poison/arrows, I hope that they implement streamlined crafting mechanics and resources. E.g., to craft a scroll you need a scroll crafting kit, proficiency in Arcana/Divine, the ability to cast that spell, and a gp cost. You make an arcana check and success = crafted, failure = lost gold. Arcana proficiency of like 7+ would make crafting the scroll cheaper than buying them on average, but not so cheap that you could sell them for a profit.