Homer is an example of a "fan" who has a lot of ideas about what he wanted in an ideal car. In that episode, he represents the forum-goer.
It appears from your answers to my questions, ganp0t, that you're not really familiar with how game development works. On the one hand, you want the game to be determined by the fans based on polls, but on the other hand, you want the game developer to do roughly twice the amount of work for negative benefit (ie. taking more time to design features, not being able to coordinate workflow, having less autonomy while doing more work outside the game).
4. the first few polls determine the game type, after that the dev team can start brainstorming alongside the polls
This is work that should be in the pre-production stage, before anyone else hears about the project at all. Only a few people are involved at this stage of the project, because there is little development work being done and a lot of concept art, organizational meetings, and budgeting and scheduling. It is at this point that the vision of the project is created, and that is very hard to do when you've got a dozen disparate voices voting on what that vision is.
7. as many as Bioware or EA see fit to work on it / The other devs work on other projects or brainstorm new polls or do concept type stuff (you'll think of something) / if they are still working, then yes. if they aren't currently working, assign them to another game until they are needed
This is assuming there is another project for them to go to. Usually, if there's no other work for people to do, the studio lets them go. Of course, i'm assuming that this hypothetical concept is a viable project that possibly could get funded.
8. the poll questions and answers will be general in nature, but the devs must go with the winning ones. Although if a poll said the protagonist was a peasant, then the devs could establish that he was a peasant in the first cutscene or level, and then make him the emperor
This explanation essentially makes any poll useless, as it means any poll result (that the developer
has to take) can be negated or changed at any time. why even have a poll, then?
9. the major story ideas should be voted one, but the results don't have to be shared with the public. stuff like major plot twists, the ending(s), and origins are major ideas. However, stuff such as individual characters and level design should be handled completely by the devs
Define "major story idea" and "major plot twist." And since you say that an origin can be changed right away, can the "major story idea" and "major plot twist" similarly be changed or negated after it is introduced?
4. How good did Mass Effect have to be? (I assume the correct answer is: good enough to sell well) / it can be as good as the team and fans can make it to be. I recently heard of an indie game called Infinity: Quest for Earth. The game has a single developer, who works on it in his free time. He accepts direct fan contributions of models, skins, and ideas. He even created a thread for as many people to pour in ideas as they could. You could say that inspired my idea.
But the fans aren't "making" anything. All they're doing is clicking on polls. the development team is still the one doing all the work, except now they're adding "design, implement, and analyze use polls" to their workflow, which significantly increases the time needed to complete this project. and in our world, time equals money, which is paying for developer salaries, technology and software licenses, facilities, and administration.