Too many Dooms out now... From BD, DST, SS... HH would have to be significantly better than those to get collectors to consider getting a second, third or fourth Doom. If some peeps have yet to like a single Doom that's been solicited, that would make it even harder...
JMO
Better to do a villain that's never been done like Enchantress or Doc Ock or Super Skrull.
HH's primary goal right now should be to do whatever it can to get their items on people's shelves. The first is always the hardest. All the ones that follow are much easier.