Yea after giving a answer have the kid smile then the Shazam shyt u said perfect cliffhanger for the sequel. Also the wizard is just as important he needs to be fleshed out in the movies since he is central to the characters. Maybe he dies to defeat Adam n banish him appearing to billy as a ghost or the keep it true to the comics n have him die after meetings billy on sum ancient one shyt like with doc strange.perfect idea.... this whole movie could be the wizard telling the story to Billy and then when he finishes Billy says SHAZAM .. lightning comes down .. strikes Billy .. then fade to black