Originally Posted by Udvarnoky
I'm still partial to not dealing with him at all. Set the adventure in the east, have Indy make some off-hand comment about him being at school, and presto, you're free to deal with characters people actually want to see.
That's true and I would certainly be happy with this solution. However I believe that he should be in this movie as a motive for Indy to do what he does. He doesn't have to have a big role but I think done right he could become a more liked character - seeing him deal with the horrors of war and mature a lot could help with that. Maybe he could sacrifice himself for his father? Could certainly add some emotional weight but again only
if it is done right. What you describe is certainly the safer, more viable and probably better option!