The ONLY and BEST way the movie should be made

make the first game into one movie to prove that there is an audience except film it as two separate movies that could come out six months apart. hype it up as, Pick a side! One story, two differ paths

Mass Effect: Paragon- Movie would be a 100% paragon path
Mass Effect: Renegade- Movie would be 100% renegade path

They could save money buy filming them together, cut them up so its a COMPLETLY different movie, but with the same(but different due to interacts) characters, same goals but different outcomes...yes the first two would have a lot in common but...

if the movie makes money, break game 2 into 2 movies

Mass Effect: Paragon 2
Mass Effect: Renegade 2
Mass Effect: Paragon 3
Mass Effect: Renegade 3

Have them all come out 6 months apart. The more movies, the more and more they would be different due to the decisions, more evil or more noble.

Then close it off by breaking the 3rd game into two titles

Mass Effect: Paragon 4
Mass Effect: Renegade 4
Mass Effect: Paragon 5
Mass Effect: Renegade 5

This would make a total of 10 movies, enough time to tell a lot of the story in a interesting way, a way no other movie has ever done... all along hype up WHAT SIDE TO YOU CHOOSE!

this would make so much money for the company, then 5 years after they release all of them, they could recut them into a master film that has the best of both Renegade and Paragon (Not something id really want to see, but they could make more money and as long as the movie gets made, I am happy)