My idea for Annihilation 3 is pretty much tied into Nova and Super Skrull. Kl'rt, while on the search for a new home for the Skrulls also stumbles upon a sort of crucible world between New Skrull space and Kree Space. Remembering Nova's action during the Annihilation War, Kl'rt gifts the Last Nova with the world which Richard christens Xandar III and seeks to rebuild the Nova Corps as a peace-keeping force between the remenants of the two great empires. Ronan and even Ravenous (for insidious) recognises Xandar III's autonomy and the Nova Corps Pan-Galactic juristriction (sp?). However, Vulcan, realising that the opportunity to wipe out every major player in the Universe making him the Sole galactic Superpower has arised. At first he tries to appeal to Richard's humanity and Earthbound roots, arguing that the Shi'ar Empire is the only Government capable of pulling the Universe out of its current Dark Age. Of course, Rich flips him off and starts a fight with the self-styled "God of Fire" and wins (think Ravenous VS Surfer) and warns Vulcan that Kree-Skrull space is under the protection of the New Xandarian Nova Corps. Of course, rulers scorned only lust for vengeance and Vulcan gears the Shi'ar Empire (the only force in the Universe with a standing Galactic Navy) for war.
I envision Firelord, an ex-Nova and fiercely loyal son of Xandar would come to Nova's aid, setting things up for a Firelord-Vulcan fight. Gladiator V Nova or Gladiator V Super-Skrull would heat things up.