I recall some character saying that the Reapers were part organic and part machine.
Side-question: Do the Reapers pre-date the Protheans? I forget.
I liked the character's individual stories. I was reminded of StarCraft, while playing this game...
Like how Saren becomes indoctrinated. Like Kerrigan.
There being some higher species that created other species, but was overwhelmed by the creations. Frankstein Monster sort of thing.
Lots of inter-race blah blah.
I wish they'd make the plot a bit more 'grounded' and less cartoony. That's the feeling I get from the Reapers. They are out to consume other races. Doing so strengthens them or w/e.
Although, it didn't seem that nefarious to me. Dwight Schrute absorbed his twin brother when they were both fetuses. So....yea. He now has the strength of a full-grown man AND a baby.
I liked the tensions between Cerebus and the Alliance. Between the Salarians and the Krogans, and the moral dilemma of the genophage. The Geth and the Quarians - Creation vs. Creator (Legion wondering why the Quarians attacked them, is interesting).
Etc. etc.
To me, the 'expanded universe' I suppose you could call it - is more interesting than the main plot of Reapers being a bunch of fatties, eating everybody.
But I guess, it's about the entire experience and not simply the main storyline. Plus, all those various subplots have resolutions that contribute to the main plot I guess..