I'd say if you're pretty darn sure you know what the problem is, then changing that might be smart. But if you don't know what the problem is, then do nothing.
Unless you're like me. I decided to take this opportunity to change everything. I'd been debating these changes for a while, but afraid if I made them it would kill me in Google. Well, now that I'm dead in Google, why not make them? They are all changes I believe will please visitors.