dungeons - a lot like science labs - with high tier magic loot
new dangerous monsters that can drop alchemical components
more magic potions
magic potion recipe crafting using alchemical components and new science tool qualities
basement alchemy workshop
magic shop overmap special
wizard tower large overmap special
dragons
more magic wands and staves, and accompanying "battery" mana crystals, perhaps with crafting recipe (with spellcraft as a required skill)