Almost? The proposed amendment that passed the House but failed in the Senate? If 3/4 of the states were going to pass an amendment then why wouldn't 2/3 call for a convention of the states?
True. And I believe every system will eventually be gamed to some amount. You do occasionally need change. But if you were to artificially enforce some "full rewrite" reform e.g. every n decades, that reform would just end up a tug of war between sides already deep into the existing gaming, trying to increase the effect of whatever tactic their side excels in.
One candidate for a possible workaround that I've occasionally been speculating about would be an organized process where n groups are tasked with doing n "rewrites" in parallel, and then a process that somehow mixes approval and random selection to pick one. The rationale would be the hope that the low chance of a particular rewrite actually making it would add some distance, would reduce the gaming-the-system incentives. Everybody has some amount of motivation to actually design a fair system, but that's competing with incentive to make it gameable by whatever side the co-author in question is on. But that fairness incentive would not really be diminished much by writing a what-if instead of a definitive future, whereas the incentive to deliberately flaw the would-be system to make it easier to game gets lower with a shrinking likelihood of the proposal actually getting implemented.
