Not a big James Bond fan, I take it.

You left out that they were both shot on film and released by Paramount. By your list, the only way a sequel wouldn't be too much like ROTLA is if Indiana didn't go after artifiacts and fights badguys who try to take them from him and meet beautiful girls in exotic locations. You actually thought Indy fighting fez wearing grail protectors on speedboats was a rehash of Indy fighting the Nazi hired thugs in Marion's bar?

The fact is ROTLA is the story of a skeptic learning to face real magic while TLC is the story of a man healing his long hurtful rift with his father. Yeah, they both have nazis, fights, artifacts and pretty girls, but so does Schindler's List. For TLC to have so many Indy trademarks worked into a completely different story is an accomplishment, not a cop-out. Sorry you don't see it that way.