I completely envisioned a tasteful rehash of the opening scene from Raiders, and when the man with the Fedora steps out of the shadows to reveal his face, it's Short Round, all grown up who says "Dr. Jones, over here." Then whip-pan to Indy. It would have played for good (not cheap) laughs AND set a new tone for the character all at the same time. Clearly he would have grown up to follow in Indy's footsteps and all the typical Spielberg father-son issues could be put between these two established characters.
Imagine having Marion, Shorty and Dr. Henry Sr. all in one film ... it would have tied the previous three together in a perfect little bow.
But once again, they didn't ask me.