My well-worn DVD begs to differ with you. Oh, I'm not saying it had any value other than pure, escapist entertainment, however I'm not sure *ANY* movie can legitimately aspire to much more.
I thought it had a lot of "heart." Beyond that, I enjoyed the discussions I had with friends later about honor, the motivations of people like Commodus in politics(the people are my children, and I their father,) the meaning of sacrifice, the value of a Republic as opposed to rule by MOB(democracy) and even the tactics of those who would render slaves of the citizenry.
One of my friends is a huge music/film snob and he thoroughly enjoyed it and was moved by it.