I'm mentioned in another thread, I see no point in rewriting or redoing content as nobody has nailed down what Panda is about exactly.
The algo doesn't seem to be working too well anyway with reports of scrapers outranking original content.
Might not be a bad idea to launch thousands of spam sites right now, right Google?
If eHow is still ranking, it may be be a good business model to explore.
Throw as much cheap spaghetti at the wall and see what sticks, don't even picking up the stuff on the floor.
And btw, I see zero reports of anyone beefing up their content and regaining rankings.