I regret that you are wrong. All that the introduction of amendments does is provide cover for Zanu PF. They may well strategically accept some of your peripheral amendments and keep the core - namely the extension of time in office and the end of a direct election of President - and then present that as consensus.
Whilst you are correct in bemoaning the state of the opposition that is no reason to allow the further desecration of our Constitution and what is left of our democratic order.