I know that Tom DeSanto purchased the movie/TV rights to COH around 2007 and talked about making a movie set during the first Rikti invasion.
I'm not saying that I believe there is any real chance of a COH movie being made but I think the idea poses some interesting questions.
Would there actually be any point in doing this now?
Superhero movies are certainly still in vogue. However DeSanto did say at the time that he wanted the Rikti invasion storyline because there still hadn't been a good "superheroes vs aliens movie" which we subsequently got (to a certain extent) with 'The Avengers'.
Would anyone other than fans of the game even want to see a film like this with a bunch of heroes that are not known to the majority of the public?