SilverWook said:

Was there ever talk about Sallah returning for Crystal Skull?

Yes. Rhys-Davies said in an interview (forget where but it was not that long ago) that he was offered a small appearance at Indy's wedding. I'm not sure if he even had lines. He said "Thanks, but no thanks." Thought it was sort of insulting to the character (it was).

Fortunately, I missed this scene in its entirety anyway as Indy IV was one of two movies I've ever walked out of. I'll take any one of the prequels any day over that horrendous pile.