I think the problem with 1 & (and moreso)2, and I love them both, was scripting. The plots and action were well done, but the script and dialogue were dry and wooden, without a lot of the personality of the original trilogy. That said, my hope is that ROTS will be so good that it will "validate" 1&2 in the sense that when you go back and watch them, there will be an element of "ah, I know where this is going"...
EpI trailer I thought looked cool and after the exceptionally long wait,
I didn't want to imagine the let down... Oooooops.
EpII trailer looked way better on its own merits.... And the movie was.
EpIII trailer more so and the saga conclusion prospect makes it the best
of the three for me at this point....