oh i love these conversations (releases the inner geek)
i agree, obi wan should meet anakin as a pilot, similar age to luke at the time, but perhaps not so boyish you know, already being a fighter and all, a little more mature and experienced
i agree about droids and order 66, as a kid I always imagined the people of the republic and the jedi were fighting clones, the clones were the threat, not droids. I don't think stormtroopers have to be clones, it has a certain logic to it, but considering the thousands of worlds, and trillions of people in the galaxy i don't think the empire would have too much trouble finding bodies to fill all that armor (and I thought it would be cool to see supertroopers (the boba concept) aka mandolorians in here somewhere as opposed to a single jango, perhaps boba served the old republic and was older like vader in TESB?)
alderaan - I'd go even further, its saidobi wan served bail, why wouldn't he actually live and serve ON alderaan, it would make the loss of alderaan in 4 all that more powerful if there was a built up back story instead of just a flyby montage
essentially, E2 should be E1 and E2 would be an actual war throughout and an analog to TESB.
**AND, to answer your ROTJ question (this is my favorite) i was chatting with a friend about that very thing, and recalled a mcquarie painting which showed curascant with SEVERAL orbiting space stations under construction, and I thought to myself, why wouldn't the final battle be an assualt on coruscant itself? guarded by MANY death stars ? THAT would be a **** of a battle. and would make more sense than taking over teddy bear land resulting in the fall of an empire
(prods inner geek back into its cage)