You make some good points. I agree that the stale vote is an issue on Steemit. I believe EOS plans to fix that with a decaying vote strength, where you’d have to vote again every month or so to keep your vote relevant. Let it sit and it’s weight decreases.
I was also just reading about IPFS’s proposed gravity protocol consensus algorithm https://medium.com/@gravityprotocol/gravity-ipfs-off-chain-data-storage-ab44aba3faa4. It’s very similar to DPOS but is weighted on both time since last vote and usage frequency of the platform. I like it.