Haha i remember the whole "freeing the slaves" concept was a big one, as everybody seemed to think it was a big deal since Anakin always talked about it being his dream. But i guess the fact that it never happens is a point unto itself--Anakin never achieve his dream.

I remember the biggest question i had was whether or not him and Padme had kept in regular contact or if they hadnt seen each other in the ten years. I also thought that Episode II would be somewhat lighter--TPM surprised me with its light tone (in a good way) and then AOTC with its dark tone, as the two films are pretty contrasting.

For ROTS i thought Dooku would play a bigger role, and it seems as if he was initially poised to, but the script was infamously restructured early in the writing stage.