I want indy to be a perpetual 20's/30's adventurer, I don't need an actual life arc for him.
Or at least do a clean reboot, so any "young indy" actor isn't stuck doing a Harrison Ford impression as their won't be any direct connection.
There is SO MUCH in the early indy years they could hit on. How he was influenced (good and bad) by his mentors in grad school, his illicit relationship with a teenaged Marion, the struggle between greed/fame and genuine interest in saving/understanding the mythic past juxtaposed on the colonial "take it from the savages and put it in a museum where ideological fanatics won't destroy it or hide it away" attitudes.
All the pulp action, paired with legit stunts and good effects, is very refreshing in a cgi dominated world, plus it could have camp without needing to be pandering to modern sensibilities. Strong women who are still women, mustache twirling bad guys with actual mustaches, and a legit awe of the exotic that folks still crave even in a global marketplace.