This is in response to a Sokol vote that just was pushed. As we are creating precedent (we need to take care).
I do not think we should vote to remove an Validator’s Payout Key - under any circumstance.
One needs to understand that after you create a Block, you are rewarded for that effort. However, the reward is not released immediately. Therefore, a validator could be removed from consensus and rewards that were rightly accrued could be lost. I am not completely aware of the mechanism for removal - perhaps the outcome I’ve mentioned is avoided. However, I would err of the side of caution.
Besides, this ‘key’ does not permit either Block creation nor voting - it is effectively powerless. Keeping it has zero effect overall.