Are they going CGI or pyrotechnics/stop-motion? Personally, I would be really happy if no CGI was used whatsoever. Look at Last Crusade. 1989. The shots of the guy who "chose poorly" look just as fake as the Nazis' demise at the end of Raiders. But everyone loved it- it's part of the charm.
They have to keep that old-school, innocent, "charm" factor of older movies, IMHO.
Indy: I'm going to CONTINUE to do things the way I think they should be DONE! *smooch*