Putting my publisher's hat on for this one. I think what you need to do with this paper is re-write it as an essay designed to convince your audience of a point. Pick a thesis, introduce it in the first paragraph, and return to it in the final paragraph, and draw an arc through different arguments along the way.
1) Always clean up your grammar and spelling. It takes a little effort, but it makes your work sound more professional. It's nice that you're getting help from the forums, but be careful your work doesn't lose its "voice" by other editors stepping in.
2) Remove the comparisons to The Sopranos, Star Wars, and other properties. Your opinions on those franchises do not necessarily reflect an objective view on their quality. While I may agree with you on the one, I may not also agree on the other. By presenting these comparisons, you divide your readers (as seen earlier in this thread) as people begin to argue against your point. Instead, find factual things from within the source material to pick apart. Show why certain aspects of ME3 are objectively broken (several videos have done this), and then show the audience's reaction to them.
Another reason to avoid these comparisons is that even if I were to agree with them, they do not offer compelling evidence of "torching the franchise" because (with Star Wars at least) the franchise is very active still. There's a weekly animated series, an MMO (created by BioWare!), comic books, novels, and more constantly being published. It's a very weak example of something not to emulate.
3) On the other hand, your remarks about the Heinlein book are interesting and very relevant. Add a source (you may cite it in context) for that, and you can then compare it to your analysis of what you think is wrong with ME3, and what should be done. Personally, I think this is the most compelling part of your argument because it is territory I haven't seen explored before on this topic, and is therefore fresh and has the most potential to convince an audience.
4) Listing your professor as "My Professor" is not a very strong source. I know several professors, of different ages and different backgrounds. If you want to use your professor as a cited source, you need to give him some authority by showing why his opinion is to be trusted. It's a lot like when you bring a witness onto the witness stand in a trial. Before the witness can give testimony, the lawyer presenting the witness is going to explain to the court why that witness's testimony is relevant and trustworthy.
In this case, you need to explain what the professor's specialty is (is he a History professor? A literature professor?), and how long he has been teaching in the field. You should also give us a direct quotation from him, rather than interpret his response yourself. If you can't do these things, simply don't use him as a voice of authority.
Overall, a good start!