DA2's ending shirks character development and introduces incredibly silly anime swords, but it still ends up with something very interesting and gives good potential for the future of the franchise that deviates from the boring-as-fuck Darkspawn - that is, a war between mages and templars.
ME3's ending goes "The Mass Effect 3 universe and mass relays? Fuck you, universe is screwed and the relays are destroyed. Good luck expecting a sequel, fuckers."
But based on the Final Hours app, Bioware never intended to ever visit the ME universe after ME3.
This is actually one case where EA being the big evil boss would work, because I can see them being "No, fuck you... give us ME4, now!"
Wait... What in the hell?
Oh, you didn't know? Yeah, the tragedy at Akuze, where Shepard lost her entire squad? Yeah, that was a Cerberus experiment with Thresher Maws. And those crew members who weren't killed were captured by Cerberus and tortured. Oh, and you find all this out in ME1 and promise the one surviving squad member that you'll take down Cerberus.
And then in ME2 you sign up with them without ever mentioning this.