I would pay committee members a set fee based on the size of their block, provided they had completed a basic course in strata law and management, and participated in refresher courses as required.
I’ve known an astonishing number of committee members who haven’t even read their own by-laws or the publications like Strata Living (NSW) made available by state authorities, let alone strata laws and regulations.
Or to put this another way, pay them if it improves the service they provide to the strata scheme, but not otherwise.