[TheSaxRunner05]

What I think would be interesting is to get a few players together and make two chart with various patterns in it - one set of simpler patterns and one set with more complex patterns (jump jacks and handstream, etc).

Have each player submit scores on different rates of the chart and plot the decline in scores as the rate increases until they reach a point of just mashing. Use math then to determine the relative difficulty of certain patterns over others.

Using this method, you'd be able to compare "160 BPM handstream vs 190 BPM Jumpstream" for example, or "jumpstream with mini-jacks vs jumpstream without them." Using multiple players will help reduce player ability bias.