User blog comment:KirbiMiroir/My new Adventure Mode Concept/@comment-28616980-20160810165540/@comment-25096445-20160811003234

The only real way I can think of improving Brawl's concept is adding actual locations from the series represented. Also, some bosses I would add include Helmaroc King (as mentioned above), Grima from FE Awakening, Sephiroth from FF7, the Mecha Dragon from Mega Man 2, Akuma from Street Fighter, King Spooky from Pac-Man World 2, and so on.