The worlds merging have a lot of possibilities as someone said previously. Though Dante & Kat could go looking to free his father considering he's still living. Maybe held captive by Arkham which will lead into another fan favorite(s) Jester & of course Lady. Complete the game will unlock chapters to play as Vergil to see what he has been up to in the shadows. DLC can be a playable campaign as Lady, sporting a new look, as well as dmc3 & dmc4 outfits with the pack.