EatChildren
Currently polling second in Australia's federal election (first in the Gold Coast), this feral may one day be your Bogan King.
Eh, I like the idea above: say nuts to canon endings, and sit comfortably with the Reapers dead and gone, the Geth and everyone still around, all in a post-ME3 universe. Doesn't need to make sense. Doesn't need to pander to the already muddled narrative end of the trilogy. Give yourself some grounding, ignore most of the past (except the rooted canon), and make a new story.