I agree with some of these suggestions, some not so much. Personally, my favorite parts of all the episodes has been the outtakes at the end or the never-before-seen stuff in the Men/Women Tell All that shows the humor and the actual *reality* of the show. When Mary was like, I have a wedgie, and Byron said - um, I'll pick it - I died laughing. It was the first thing that made me actually see these people as HUMAN. Wendell's impersonation of Frenchie at the end of one of the shows... totally hysterical. They need more of that.
And they need to not be afraid of unconventionally-pretty people. There are many shapely women that could be cast if they were willing to do less hottub scenes... Not to mention Bob... I know he wasn't well-received when he was the Bachelor, but when he was one of the 25, he stood out because he was likeable without being a Ken doll.