Believe it or not, there are still some people out there using the Internet for the forces of good. One of them is this dougdirt, who posted on Minor League Ball a valuation of each team's minor league system based on the letter grades given by Sickels. So just to be clear, this is not Sickels's personal rankings of the systems, but some other guy's ranking based on the letter grades Sickels dished out.
The Twins are #9. Not too shabby.