A first person RPG would be left field and crazy. I would take a 1st person RPG over a 1st person action game.
But lets be realistic. Its going to be a 3rd person action adventure. 99% sure. Indiana Jones is about exploration puzzles and action. you can incorporate everything into that style of genre into 3rd person.
3rd person for me. See the details of his fedora flying off during a chase or battle. The whip moving as he runs. 1st person would be interesting in a few ways.
Who is this deluded? I think the only CGI was Contraband, TOW 2 and Redfall, which are new games and also Sony and Nintendo use CGI for new announcements (like Rabbids 2 or GoW, the most recent ones I remember).