Quite agree Clinton, Ad's and CAO 100.5 have to be done. However the C of R holder chooses what maintenance is carried out, usually schedule 5 or the manufactures system of maintenance. I know of some maintenance providers who will have the C of R holder sign a waiver if they do not want some non safety of flight defects rectified. Your call, you just have to be able to justify it.
You can of course make your own system of maintenance and have it approved by CASA.