Well, Steven says now he's willing do another one, it takes time to get back into the action genre after doing historical dramas. Steven said in a recent interview that he wants to do the next film like the older ones (the 30's adventure serial) and George wants to do new stuff (like the B movie). Steven is currently making a film about Tin-Tin, a early Indiana Jones. I'm interested in seeing that as I loved the cartoon from the 90's. So it seems Spielberg is going to put more heart into the next film. I think he did for Skull but not enough for he let George take over more of the story (the idea of Indy having a son was Lucas' idea). Hopefully for the next one (if there will be), Steven will stand up more to George and argue for a better story. But I get the feeling arguing with George is like arguing to a stubborn child.