Quite interesting that they made it very clear it was Kassim's magoi. Alibaba seems to have inherited Kassim's will when he mercy-killed him, rather than them just having a moment. I guess the question would be whether it is some dark, poisoned magoi he'll need to dominate, or if it is just Kassim's determination to bring justice to the world.
I'm also surprised that Kassim's really dwarfs Alibaba's own. Aladdin sees a very different view of Alibaba's potential, to the point where it is almost greater than Sinbad's. The others here see Alibaba not really registering much at all.