FlexChart -- Parallel Coordinate Chart
I often have the need to visualize 10's or 100's of variables simultaneously.
There are very few ways to visualize more than a few variables but I have found that an effective way is a Parallel Coordinates chart.
In the past, I have written code to manually massage data and setup a FlexChart line graph to do this but it is a pain to manually rescale all the values and restructure the data. Plus, depending on the dimensionality, FC can take forever to render and crash if the data size gets to even a few hundred/thousand data points. Clearly FlexChart line graphs are not engineered for this purpose but I think it would be very easy to do so from where you are at.
If you Google "Parallel Coordinates" and you'll find tons of examples. I have attached 1 screen grab.