Andy_Langton - 11:45 am on Apr 17, 2012 (gmt 0)

I doubt you will see any ranking difference, but the best idea is usually just to let Google do its thing.

Typically, a high recrawl rate is a factor of both frequently updated content and a degree of "trust" or "authority" in the site itself, so usually it's a positive sign. Unless bandwidth is an issue, I would leave it be, personally.