You can allocate more disk space, which will bump up your overall score (slightly), even though the application isn't making use of all of the space for the time being.
I tweaked my profiles for added HD space, and gained a couple of points. Over time it will add up.
I've noticed that the Network ranking has been a little wacky lately. My network connect is now getting a 232/100 instead of 100, and the dialup at home has rated higher than before as well.
-Tacks