What if the inception was for Cobb to heal?

Has anyone thought that maybe the whole thing is a dream for Cobb so that he can heal and move on from Mal?  What if Ariadne is the one leading the dreams and leading Cobb to that point?  She is next to him the whole time.  I could see her as his next girlfriend, but he's not able to move on.  There are some similarities with Ariadne and Mal.  Both french brunettes.  Everyone looks at Cobb when he wakes up in the dream on the plane, as if to see if he got it.  A big change at the end of the film is that Cobb sees his kids' faces.  Maybe they just incept his mind so he can move on.  I don't know maybe.  Just wanted to see if anyone else has thought that.