No, starting a new party won't happen, at least not this year. But it's entirely possible Mighty-Midget Mike could chose Mittens as a running mate if he gets the Dem nomination - it would be his idea of a "unity" ticket to counter President Trump.
Your scenario also fits as I see it.
Mitt and Bloomberg seem like they fit somehow.
Wasn’t Bloomberg once a Republican? Mitt is vermin now in the GOP.
and that niece of his has got to go....haven’t we already trusted too many allegedly avid GOP types only to have them turn against us?
But yeah....think...Bloomberg and Mittens.
They’re kind of a match. Might have been part of a plan all along.