2nd reply. Something like this might be interesting:

Adjusting the reputation upper threshold based on the number of followers. Also, fixed a bug so that X and Y each max out at 1, while the combined radius maxes out at sqrt(2). That limits the reach of the individual parameters.

Believe it or not, the arcs are still in there, even though they're difficult to see...

Out of time now, so I'll see how it goes and post more about it at some future time.