Maybe the found footage of Dem could be worked into a bigger story.
Inebriated Jones in the temple of Dem
After unearthing the footage of Dem's mythical drinking sessions Indiana sets out to get to the legendary horde whilst avoiding Dem's 'booby' traps.(including some 70's style gothic strumpet)
Finally he comes face to face with Dem the guardian of the stash, who actually looks younger than his years due to the alcohol pickling effect.
Then they both get so smashed that their heads melt.
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MIKE: I've got it! Peter Cushing! We've got to drive a stake through his heart!
VYVYAN: Great! I'll get the car!
NEIL: I'll get a cushion.