I came across an article about Harrison Ford asking for Indiana Jones to be killed off in the next installment. 

Sources say that Harrison Ford has told Indiana Jones filmmakers George Lucas and Steven Spielberg that he wants his character to be killed off in the fifth film.

Here's what an insider had to say about it:

“Harrison thinks it would be good for Indy to die and pass on his hat to his son in the next one.

George especially is resisting the notion but Steven is considering it. Funnily enough Harrison wanted the same for Han Solo in the final Star Wars but George put an end to it. This time he doesn’t have all the say though.”

(via Harrison Ford Wants Indiana Jones To Die! | PerezHilton.com.)

Now don't get me wrong, I loved the first 3 Indiana Jones movies.  However, this last one didn't add up to the other in the franchise.  Personally, I think Harrison Ford should have hung that whip up a long time ago when it came to Indiana Jones.  I can see why he would request the character be killed off.  But then again he also thought Hans Solo should have been killed off in the last the last Star Wars movie he made.  We all know that didn't happen.