Good point and probably an important one. I won't want to be voting on something, knowing that the STEEM will just get sold to buy HIVE.

Of course that would be easy enough to dodge, just by using different account names, but at least it will filter out the historical posts from people who are/were actively hostile to Steem. I'm excluding hive participants during testing, and I'll play it by ear after that. Maybe it's just as simple as labeling the author's information with their hive inactivity time and let the voters decide how to reward it.

I suppose I could include posts from inactive accounts and hive participants in the output but send beneficiary rewards to null, but that starts to feel kludgy. Also, there are some hive participants who are decent contributors here, too. Handling that situation in the long term will be challenging. "A few bad apples spoil the bunch", as they say...

I think that's a feature that you should suggest to symbionts with their Wallet upgrade proposal.

Good idea. I will do that.