I didn't think the movie is going to be bad because of milking (but you're totally on the point with that). I feel that he's like a Hollywood has-been that doesn't know when to stop. He failed as a politician, and now he's trying to go back to what he was doing before, but he's 65 years old, with muscles like that of the
flying squirrels (at least that's what I saw on a picture some years ago).
He was an iconic figure in the past, but at some point, you should say, let's stop and enjoy the retirement, let's let someone younger have his future open, instead of clinging to the days gone by.
Maybe it will be a good movie, I don't know. Personally, I always preferred him as Conan. It would be awesome to see him as an old king, and to see the story continue from there, as he tries to defend what he holds dear one last time in a most glorious and savage battle, rather than trying to make himself 40 years old younger to play a role, that there is absolutely no way he would get, if he auditioned for the first movie again.
Although, it might be an interesting movie, if Clinton makes his appearance there too. There were two actors who tried their way in politics (perhaps more, but for now only Reagan and Arnold come to my mind), it would be interesting to see a politician, without prior acting experience wetting his toes in acting again.