My heart says yes, shelf space says no ... but classic Kirby-y Mangog would be badass enough to clear off room for. Although he'd look kind of silly without more Asgardians to battle him, wouldn't he?
Mangog-sized yes to Mangog. Maybe if they do him and he sells well, they would see there is a market out there for Thor characters like those pictured on the cover posted above: Warriors Three, Balder, comic Heimdall, etc...