An FS3 that isn't Made in will be easily and rapidly forgotten by the community unless it has superb features and high mod compatability.
Canon crap is one of the things that can ruin an entire universe for me.
Take Star Wars for example (just an example mind you), the movies were pretty good, maybe not the best sci-fi universe, but still. Then, obviously, you get the EU which ruins everything. (Let's leave it at that, no more Star Wars discussion. I only brought it up as an example, nothing more).
If FS3 is something crap, it's still canon. That way we have stuff that is canon that is crap. This is like piling up bile on top of a cake, you can choose to ignore it but it's still utterly disgusting.
An FS3 I'm sure will change everything, for better or for worse. There's no discussion that everything here will be completely different a year or so after FS3 is released.