EyeShotFirst said:
I have ABSOLUTELY no problem with luke and leia being brother and sister. removing that one little plot would destroy the saga. And take atleast a half hour out of the whole saga.

No it doesn't. It takes out exactly the following:

- Leia being born in Episode III
- Bail Organa's discussion about adopting Leia
- Yoda's "Sky ... wal ... k ... er" line as he dies (he can still say "There is another" in ESB and ROTJ)
- The "sister" part of Obi-Wan/Luke's ROTJ conversation (though I'm in favor of the removal of this conversation entirely, whether Luke and Leia are sisters or not
- Part (but NOT ALL) of Luke and Leia's conversation on Endor
- Vader's specific lines "SISter ... so, you have a twin SISter ... " which can easily be replaced and/or modified
- "Tell your sister ... " - the "You were right" line can stay
- "He's my brother"

Done. That's it. And taking out those parts would all be improvements.