EPISODE III most have scenes.
this are the scenes i can think of right now from the top of my head that episode III ought to have:
1) ANAKIN vs OBI WAN huge BATTLE.
2) DEATH of
a) COUNT DOOKU
b) MACE WINDU
c) most of the JEDI COUNCIL MEMBERS
d) if there´ll be a new sith, his death too.
e) PADME???
3)ANAKIN´s final turn to the darkside...of course.
4) Birth of DARTH VADER
5) Birth of the SKYWALKER TWINS
6) Flee of OBI WAN with LUKE and of YODA. maybe the 3 together???
7) BAIL ORGANA keeping little LEIA
8) BOBBA FETT taking revenge desintigrating some jedis.
9) ANAKIN SKYWALKER showing off why he is the best STAR PILOT of the galaxy EVER.
10) PALPATINE becoming EMPEROR of an imperial republic. (with a senate, which he destroys between ANH and ESB)