I really would like to see some answers from the addressed people here ...
I am not a witness, and you know my point of view already to agree that a linear reward curve favors self-voting too much, indeed, but that I personally would prefer a curve which starts non-linear (against self-voting) and ends linear (against excessive rewards of single posts).
Anyway: good that you keep asking these important questions!
RE: Why I Advise Against Linear Reward