If you're thinking of changing the title at all, I think "Indiana Jones and the City of Gods" is nice. I've gotten used to the title now, but it does foreshadow how much of a stitch-job the movie is, i.e. Lucas liked "Kingdom", Spielberg and Koepp wanted "Crystal Skulls".
Whatever you make the title, please at least keep "Indiana Jones..." at the beginning. Raiders is a standalone film, it would just look weird if after two sequels, the format went back.