RE: Although subjectively downvoting posts to zero is anathema to me, the Layer 1 ability to do so must remain (for now at least)
I am not really sure what your method calculates as the description is too comprimed for me. I am picking the most readable part and expect you to elaborate in case I read it wrong / drew wrong conclusions.
author and curators receive altogether the same amount.
I do NOT want author and curators to receive the same amount. That is what happens right now and that is the exact reason the DVing is OP.
A post that gets 95 worth of downvotes and 105 worth of upvotes pays out 10 total (5 author, 5 curators combined). The vision is to pay out 105 total - assign 105+95=200 from DAO, pay out (105-95)/2=5 to author, (105+95)/2=100 to curators and return the balance (95) back to DAO.
That way, upvoting a post that has (is going to have) DVs on it pays out full curation reward. Not 5/105=5 % of the par reward like Hive 25.0 does (easily reachable via UVing something noone reads / bothers to DV)
That is Step 1 (letting people know they can UV someone that is under a deplatforming attack). More tweaks are necessary in order to get a good value discovery, but the above is an improvement to the current system on its own.