I haven't been as convinced of a Cease turnaround, but I am hopeful Katz can certainly help. And he doesn't need to be an ace, but a plus back end starter would go a long way.
I know it's not the same, but if there are any golfers here, you can truly relate to this. You can know exactly what you are doing wrong, but by yourself it is so hard to correct. Having drills, and someone watching to ensure you are doing those correctly and translating it to a swing - is a true game changer. Just going by 'feel' can often lead to bad corrections and overcorrections, sometimes making things worse. You have to get to a place to stop thinking. That's hard.