The only argument against removing self votes is that it's completely ineffective. If people are self voting for ROI they'll simply create a second account to vote on the first. I'm in full agreement that we need to tackle governance changes soon. It's especially needed in light of what's occurring presently on Steem, so Hive can point to changes that are more concrete than waiting periods & a temporary reshuffling of stake, and show that Hive is much more resistant to the attack vector that befell Steem.