After reading the summary of Darabont's Indy 4 script that Lucas rejected, and seeing how much better of a film we could've had, I have little faith or interest in a 5th film. More than likely it will just be a setup film to hand the franchise off to Shia or someone else, and Lucas will have his stupid, tinkering paws all over it. No thanks (a.k.a. I'll Netflix it eventually).
And silly Abrams jokes aside, he would be well suited for this material. Action, adventure, characters, conflict, and heart... everything he focuses on in his work. Also considering his partnership with Spielberg, having him helm Indy 5 is actually something that would get me really excited for it, enough to pay to see it in the theater.