The ONLY way for a Mass Effect show to be done PROPERLY is for the show to be done not only starting at the beginning of the original game but also utilize a Paragon male Shepard AND a Renegade female Shepard that switch spots at times but not people or situations!
It is KEY in showcasing the wide range of dialogue, different interactions, and outcomes that are possible in the Mass Effect games. Also if some of the voice actors actually were allowed to play their roles then it would garner even more support for the show
