I read somewhere that with Avengers Hulk, Marvel had finally found the right balance; feeding us small bits of Hulk (little screen time), but when he is on screen make him impactful. The trick now is applying this to his solo movie. I think this could work, now that we have an engaging actor as Banner. Like Iron Man 2, which had little screentime of IM actually in action, they managed to pull it off because of RDJ's charisma. I don't believe a Hulk movie actually needs to be saturated with Hulk screentime, so long as there are villans in there that Banner can play off of..i'm sure this will be the case if, and when, the tv show gets started due to budget reasons.