I think that maybe you should go thru and rate certain things according to how important you think they are to the overall story. If you can also inject anything from season 6 then that'd be great. Season 6 was the best season by far - and it actually flows pretty well if you st and watch all 6 eps in a row. I also really like the flashbacks ideas as has been mentioned.
I haven't actually picked up a copy of season 8 yet - it's sold out everywhere i look atm - bit I will go back and take a look at the other dvds.
As an audience i'd be most interested in seeing something fresh, a new angle on things.
what about a really grand theatrical style opening? I'd love that.
-FYI I have seen every episode of the show more times than i care to count. all except 'Krytie tv'. It's never been aired here in oz as far as i can tell