Ok, so the miscommunication that started this thread is that there is already a time bank(im working to help make the current plan more clear in a separate thread), what your proposing is a different setup for the time bank.
Where your time bank is meant to be that, instead of the handful of priority users having 12 hours/ week, that everybody would have 3 hours/ week.
And the hours/week is adjusted as needed to control demand on the space.
This is so it is fair for everybody who is paying dues to have access. And not wanting to be left in indefinite limbo of when they will be able to use the space again.
Does that sum up the proposal you are trying to make here?
(There is alot of discussion in this thread besides the time bank proposal and that should be handled in a separately)