I might be in the minority, but, I enjoyed Ares.

They reveal the character in the red/orange hue and I thought it might be ok with him being the bad guy.

Then I see he's producing it and it was pretty easy to see he was going to turn face and this was going to be the movie, that's when I said this isn't going to be good. However, his flat acting played pretty well into an AI that's learning.

All of the Tron movies require a major suspension of disbelief, none of them are going to win awards for plot, but that's not what these movies are for. When I see a Tron movie I just want to be entertained with pretty visuals and a solid soundtrack. If I want a movie that's going to challenge my view of the world I'm going to go somewhere else.