Hi Kiwi! Good discussion.
The Steemexclusivity is just a difficult one. I also have zero interest in similar blockchains, so I am biased and would go for full exclusivity, but.
I also know users that crosspost, and it is pretty much the same as curating them. Vote for those who only post here, and support the ones that go FULL Steem. Or also give attention to the ones that post their content elsewhere. If we don't support, we likely lose those.

If posters post in their blog on steemit: "First published on Hive", I never vote, but if users post the same content elsewhere, and just do it because they live in a bad situation and see this as an opportunity, I blink an eye. The small users who need this to support their family didn't choose to be in this situation.

Positive behavior needs to be rewarded and we need to let the users know that we care of them. Those who are on the fence, just need an extra push. They put people on blacklists that show support to Steem, let us be smart and not put labels on people. Nobody likes that. I get often the response that we are the friendly chain, lets keep it that way. Most people don't like the fight anyway.

It is our responsibility to take care of the good and the less fortunate ones. And persuade the ones who are on the fence in a positive way.

So I vote for ALL users are eligible.