User blog comment:Garhdo/Unhappy with the ending? Make your own!/@comment-24174486-20130225170917/@comment-24174486-20130226115836

The main problem with it is the question of why they would make a Reaper to deal with Thorian thralls. Reapers are organic/synthetic hybrids—why would the Leviathans have their thralls converted into a Reaper, rather than simply making a purely-synthetic creation to deal with the Thorian? With the Catalyst, there's a reason the Reapers are organic/synthetic hybrids—they're a means of "preserving" organic races in an ascended form.

It also creates the massive problem of the whole "salvation through destruction" thing that the Reapers have being completely incompatible with the retconned reason for their existence in this alternate ending.

And now to think about it, it's kind of ironic that they got rid of a character who believes that the created will always rebel against their creators by...making the Reapers into a creation that simply rebelled against their creators.