SNK should have made a new game that's more like a contrast to Samurai Shodown. Instead of ghosts, magic and demons in a past setting, you're fighting in a future setting with cyborgs, mutants and aliens. Maybe even bring back weapon-breaking, and add slash/bust but with 3 styles instead of 2 if you want to alternate your character's moves and flow because it can also modify their health, damage and speed, and add an enchancement meter too that can buff your character in a unique way, make it tag-fighter too to be more unique and your characters can use each other's enhancements. Imagine fighting cyber ladies, death machines, alien queens, hybrid cuties, mutant supremacists, bounty hunters, new world overlords and human rebels.
That, or they could at least try to revive Savage Reign.