[RenegadeLucien]

Yeah I think we're talking about totally different concepts here. Per-receptor spikiness isn't something I ever really considered in my algorithm, at least not beyond "this note is really close to the last note for this receptor, therefore it should have a high value".

I can't think of any files off the top of my head where per-receptor spikiness plays a major factor in the difficulty of the file, so I can't judge how well the simple "this note is close" factor covers it. I do think such a metric would be valuable to have.