Temis the Vorta wrote:
What you're describing is fun when you're playing a game and actively participating. That's very different from what's fun when you're only an observer and not a participant. There needs to be "hooks" to a story to keep a passive audience engaged, stuff like "so what's the deal with the Cylons?"
That's why I see any Mass Effect series being set during one of the other conflicts in the lead up to the game trilogy. That way there's a clear focus for how the story would unfold and there could be all sorts of commentary. The Rachni War/Krogan Rebellion would be good fodder for that, since there's a lot of politics involved and room for morally ambiguous material.