So if Magi reincarnate when they die, it would make sense if the current Magi were reincarnations of the original 3 Magi.
But one of the original 3 Magi is still around. So that doesn't really work.
I doubt that. Aladdin only agreed to tell him everything. It's not like he agreed to be his prisoner or anything. Unless they're going to try and hold him against his will, after he's done talking to Kouen, there's nothing really keeping him with Kou.
Well if he's allied with Leam and Magno, then he's got Titus. Cause Titus will presumably be running one of those two contries.
Probably Judal and Hakuryuu.