Thank you for your feedback.

Although dpool is an interesting tool, it is not "the perfect tool" that can lead to good governance
We all know that survey questions can be guided and do not allow users to express their opinions in a nuanced way.

I agree with you that the witness reward scale should be reviewed.
About the number of witness votes and voting power, I invite you to read this interesting analysis from Hive account@raycoms

Eliminate downvotes

Can you elaborate on why you want downvotes removed?

create a Proof of Activity ranks users based on how much they produce value for Hive

Can you tell us how to quantify "how much they produce value for Hive"?
We already have a ranking of users based on their activity and other criteria.
Number of posts, comments, votes, ... each of these values can be easily manipulated. It's then more PoB (Proof of Bot) than PoA. So I'm not sure it's a good idea to rebalance VP on these.