Oh I thought of another way that Doomsday is different from the Genomorphs.
Doomsday isn't an organ based lifeform.
In Doomsday 2 Electric Bugaloo, Superman had a motherbox on him, it gave him a lightsaber and a sonic gun, perhaps some other stuff, I can't remember, it's been a while, after all.
When Supes cut Doomsday with his lightsaber, Doomsday's arm was uniform grey flesh all the way through- no bones, no tendons, no circulatory system, no nerves, no muscles, his arm was "skin" all the way through.
The fact that later Imperiex reduced Doomsday to a skeleton could be taken as either DC not caring the least bit about continuity, or that Doomsday adapted at some point to grow an endoskeleton.
I presume that the genomorphs have things like stomachs, lungs, hearts, livers, kidneys, things like that.
Anyway I was thinking that Paul's research has a gap in it- metagene research.
Possibilities include the Extreme Enhancement Modules from
Major Bummer, devices that attach to the heart and apparently activate the host's metagene. Can't be that hard to get, since the aliens who handed them out like candy were college students studying Earth superhumans for their thesis or something like that. Presuming that these guys exist of course, as always.
Another possibility, if he exists, is
Vulcan. When the White Martians were meddling with human DNA which resulted in metahumans instead of kryptonian style powers for everyone, they created a metavirus- a communicable superpower. Unfortunately for the white martians that power was pyrokinesis and so they begat a line of Buffy the White Martian Slayers.
Although while I think the concept of Vulcan is interesting, his existence seems a tad problematic considering Zoat had the Guardians make martians the planetary equivalent of agoraphobics, which means that white martians coming to Earth to play god with human DNA, or being enough of a presence on Earth to warrant a multigenerational war on Vulcan's part, it just seems highly unlikely.
Which is a real pity. Pyrokinesis isn't bad, but if a metavirus can be created to pass on pyrokinesis, it's probably only a matter of research and resources to splice in other powers, as long as the powers are metagene based.