Okay, so i saw the *cough* heavily disguised forge pieces in spartan ops, notably the latest season, where they're using actual multiplayer maps, and that sparked the idea for me, how would actual player forge work with it?
spawning:
-Specific spawn points for phantoms if you can use them, probably a specific piece...
-different teams could act as different enemy classes (i counted, theres 7 different classes)
--the enemies could be specified in their individual classes, using their game type tool... (ex: elite generals, jackal rangers, imperial grunts, etc...)
-different objective are fairly easy, and for specific enemy spawns, you could use the objective tool again...
-i think you sorta get the gist...
the only problem i can foresee, although its not really of relevance, spartan ops wouldn't have a story on the forge side... upsides though, are seriously awesome.
(also on a side note, this would probably be the first and best opportunity that 343i would have to have players create their own spartan ops, and possibly firefight maps....)