The article seems to focus on how to get "acceptable" candidates running for president and how, once there, they can be kept under control. However I think the real questions should be: how on earth did a candidate like Trump ever get to a position where they could win and what is the state of the country such that a candidate like Trump ever came forward?
If none of these are addressed then you might be storing up trouble and in four years time end up with a bigger problem than the one you just solved.