That's very much besides the point of shortcomings in your algorithm, but I'm certainly aware of the limitations and shortcomings of my current sadkitten algorithm. I'm working on a collusive voting detection and scoring algorithm which will probably inhabit a different avatar than sadkitten. One bot cannot and should not be required to embody a total solution, probably there is no such solution.
I do disagree with the test tube approach to abuse. This is dynamic system and you're not going to get a lot out of standing from a distance with a magnifying glass, one must act.
I look forward to what you come up with for detecting collusive voting.