I don’t care how good someone thinks they are - eventually they will fall to temptation and fail to resist the bad incentives placed on them by a system.

If a government is elected under a winner-take-all (first-past-the-post) voting system then there is no incentive to change that system to solve gerrymandering (also the spoiler effect and misrepresentation error). I hope it is possible for an newly elected party to quickly implement a representative voting system after winning on an unrepresentative one.