Very interesting. I'm undecided whether self-upvoting and reciprocal upvoting could beneficially be reduced through a hardfork change. I suspect there's no political will to do so anyway.
Here's a tool for visualising/exploring recent voting patterns in your steemit community:
http://www.steemreports.com/votes-graph/
I'm not criticizing selfupvoting but abusing that gift.
Oh yes, I see that. I would also only like to see a reduction in it, not eradicate it. I think there may be some changes to the reward mechanism that could reduce it a bit. I'm undecided whether I think it needs 'algorithmic regulation' or not anyway though.