@York Audio My very boring cliché metal tastes would be with a UK V30 (or maybe even a G12K100 that I hate alone but LOVE as a blend speaker) in a 2x12 cab or "just the Hesu" in the MESA OS cab (or any other cab that adds body to this very tight speaker) but I 100% understand that you would be doing stuff that kinda overlaps with already released products.
A very innovative sounding pack that could be marketed as an ultra modern V30 killer/V30 alternative release would be a 2x12 with Hesu Demon and a Eminence DV-77 (or a MESA OS...xD sorry to repeat myself but I dont think there´s a better cab for metal out there than the almighty MESA OS)
Dont know how they would work together but each of the single speaker captures would IMHO deliver the goods for a
lot of people in the metal crowd that dont need their (albeit awesome sounding) 457th V30 IR pack
another factor would be to either use a cab that makes the speakers interact/influence each other or one that "isolates" them more....
But im talking out of my ass here xD you obviously know your cabs and speakers and have tested a lot of stuff behind close doors so you can kindly ignore me and do your usual magic xD