Excelent idea, one which I ave considered many times but unfortunately do not have the neccersary expertise in quest making. The only help I could offer if a group of people wish to start this is possibly tile creation, and basic quest design.
It would make an great quest though, I was thinking of making it span all 6 episodes but I think that may be a bit to ambitious, especially witht he transition of main character from anakin to luke.
This senario made me think perhaps it could be an unseen character which we could create whom spans all 6 episodes. Levels could take place against the backdrops of main scenes int he film.
However, this means that the game would probabaly lose all its appeal, I think most people would want to play as a well known character who at least features in the film at one point. I guess we could use a random storm trooper for the game and hav it pro empire, however that would mean lightabers would be a no go.
I suggest we follow lukes story, you could expand apon the current storylines of the film and set the start of the game perhaps a year or 2 before A New Hope and perhaps even finish it long after ROTJ.
If we stick to this idea I suggest something vaguely simillar to the follwoing:
Areas:
Tatooine
Lars Home Area
Sand Dunes
Obi Wans Pad area
Jabba's palace
Mos Eisly - Cantina
Hoth
Rebel Base
Ice Cavern
Snowy Area
Battle field
Bespin
Cloud City - Exterior Area, Freezing Chamber ect
Dagobah
Yoda's Hut
Dark Side Cavern
Training Area
Death Star
Limitless Posibilities
Obviously Most areas would be accesible but you wouldn't be able to do much untill aquiring different items or powers.
Dungeons Could be:
Tusken Raiders cave, boss tusken raider.
Cantina - Very Small, simple boss involving two thugs
Death Star - No boss so to speak, but loats of storm troopers towards end of dungeon, also no real end section you find Leia then take an alternative route to the 'entrance' which could actualy be a different area yet looks the same
Death Star Attack Run, Dungeon which uses raft paths in order to simulate x-wing - Boss would be exhaust ports complete with vaders ship.
After this point You would probably gain control of the lightsaber. And would have depended on blasters untill now.
Ice Cavern - Standard Ice level Boss = Wampa
Dagobah - Dark Side Cave - Wierd, mysterious dungeon, heavy use of force in this dungeon Boss would be toned down version of vader in simmilar way to phantom gannon.
Cloud City Freezing Chamber - Multiple (3) battl;es with vader, in freezing chamber, glass window section and final bit on walkway.
possibilty for dramatic cut scene here.
Jabas Palace - Boss - The Rancor!!
Jabbas Cruiser, not really dungeon but a hectic fast paced battle section culminating in boss fight with boba and perhaps with Jabba (we can alter the storyline slightly! Can't we?)
Back to dagobah, perhaps another visit to the dark side cave with no powers to open new areas of dungeon? (we dont see luke go back there, but we can assume he does)
Ewok Village - Battle with ewoks?!? I dont know!
Forest mood of endor imperial shield generator - perhaps luke fights hear before "surrendering"
Death Star 2 - Vaguely Simmilar but different in places, much harder enemies and new section involving emporers tower (we can assume luke escapes his father but is recaptured and taken to the emporer)
Thats 13 dungeons! Not bad, if we could get some skilled dungeon makers on board it has lots of potential.
Weapons could include
Lightsaber blue - rubish really, same as wooden sword
Lightsaber blue II - no differenece just slightly stronger, could recieve this in empire strikes back.
Lightsaber Green - Ability to shoot "lasers" back (shoooting swords ability) much stronger than blue one
Purple saber? - Secret one found in dungeon? Perhaps on jedi temple level only accisble after defeating emporer palpatine? Ultimate saber, most powerful one.
Blaster 1 set for stun - boomerang
Blaster 2 set for kill - arrows
turbo laser - light arrows?
Grappeling hook - hookshot, used to traverse distances such as death star gap
im at a loss for the rest of the items, perhaps force push or something?
Maybe ability to use lightning? Secret ability?
Sprites could be...
Luke IV
Luke V
Luke VI
Storm Trooper variations
han
chewie
leia - variations
ben
vader
yoda
Lando
Lobot
Boba
Imperial Officers
bounty hunters
imperial guard
sand people
Artoo
threepio
Tarkin
snow troopers
owen
beru
ewok
various other alien inhabitants
various other droids
ghots ben
anakin skywalker
palpatine hologram
ben and vader dueling simple animation sprite for sue on death star
emporer palapatine statues
emporer
jabba
bib fortuna
han carbonite
rebels
xwing - raft
ligtsaber
blaster shot
hew that was a lot, i might add more later, feel free to expand on this.