I wanted "classic" Indy chase scenes. I wanted subtle humor. I wanted a story that was a "stretch" as far as realism, yet still plausible. I got all of these things in Indy 4.
With Last Crusade still being my favorite, this easily fits in as well as Raiders for overall enjoyment. Lucas dipped his hand in this a bit too m uch, but Speilberg directed beautifully.