indeed, i dont like the picture of elemental mage like s sorcery for Conan exiles. I would say that even snake arrows should be some sort of sorcery. When i imagine that bad guy from 1st Conan movie, he could turn into snake, change snake into an arrow, manipulate people. Very suitable mix of religion and sorcery that would fit to this game (religion, sorcery and alchemy should work all together in Conan Exiles).
Necromancy is little bit too much to me, but i guess it would make sense as well, especially with implementation of corruption, fire orbs, curses. It could also require you to wear legendary items that would grant you this powers (Item would tell you what resources do you need to cast the spell and the item alone, but it would be like “fuel” to your magic… every “cast” would reduce the durability of the item and that would obligate you how many more times you can cast the spell - it could also inflict corruption to its wearer). There is just so much you can do about it…
Now when i think about it, it would be really great! I would especially low to see Sorcerer NPC that would attack your base or you could also brake them as other Thralls and use them for your own base defense!