Indiana Jones 5?
He needs Nazis to be the main villian. Ark and Final Crusade were the most succesful.
So it will have to be something about him stopping the rising of the third reich again....
Maybe the setting is the 1950's and a certain Dr who fell off a chair and hit his head creating a flux capicator and the Nazis find out....hmmmmm
SIDE NOTE....isn't he supposed to be in the New Stars Wars movie?!?!? Hans Solo delivers a crystal skull to Indiana Jones??