Originally Posted by jaqua99
at that point, by phase 4, RDJ will probably be a little bit too old
As much as I love RDJ, I don't see him him returning to the role past Avengers 2.
IM4 will most certainly be a reboot of sorts for the IM franchise, w/ a new cast.
As just stated, RDJ is getting up there in age, not to mention IM3 is the last film in his contract and Gwyneth Paltrow, Don Cheadle, Paul Bettany, and Jon Favreau probably were/are on a film to film basis anyways, particularly beyond IM3.