I cant! Now I'm torn between huge burning stacks and potion shennanigans! And I hate retaliate fireball like the plague, and I'm unsure about making potions and more powerful! Arrrgh! And untill someone else votes mine will be the decisive one as far as the poll is concerned! And if someone votes one I'll think of the downside and vot for the other and it'll be tied again! Arrrrgh!
Err, why not add a third option - they replace avatar's symbol with the fireball thingy due to the north being all magey and mystical and all that, and stick the cauldron in Naga City?
It would certanly lively up the game, give the northern reward some sense, and reduce the horrible horrible tension of this conundrum! Arrrrgh!
(Voted Cauldron. Possibly want them both in. Voted with 0 testing on the "I know what I'd do with something like that and don't want fireballs chucked at me even if it works in my favour". Which is not really decent thesis material.)