Good questions.
Tip of the brain:
Break the compensation into 2 pieces:
(1) A living wage (e.g. time-average the value in USD over the payment period (e.g. preceding 15 days) and pay out a USD-pinned amount, e.g. $2500 worth of ZEC at that time-average price.
(2) Take the sum of ZEC payouts to the committee member (e.g. the ~ 24 payments/year) from (1) payout that amount again, 2 years after retirement from the committee.
Huh… I guess this incentivizes retirement…