platformer a la metroid, but with characters from all the classic pce games.
so, as jlued said we'd see the BONK universe... but also:
bravoman!
JJ!
Jeff!
Zonk!
etc.
etc.
some characters would be playable characters, some would merely make cameos, or be NPCs, blah, blah, blah... somehow we'd make the pastiche work...
... instead of Mother Brain, the final showdown would be with KING DROOL...
the levels would be ingeniously designed (like metroid), so that when you obtained a new "power up", you'd have access to a previously unavailbe section. All the powerups would be associated with Hudson/PCE characters... JJ powerup would let you jump very high, Jeff powerup would let you spray paint, pee in public, and dress up as a "furry", Bravoman powerup would let you say "I'm Bravoman", Gogan powerup would give you an axe for taking out certain bosses, Zonk powerup would let you fly and call a buddy to help you, etc. etc.
Hey, I can dream.