This does make sense in the statistical analysis. More senior officer slots means you can train more officers up to master in a quicker fashion. I would counter however that I have seen a massive drop off in interested young officers in jumping through the requisite hoops to get their Chief Officer ticket. Engineering is a different story. Can’t beat the prospective Chiefs off with a stick.
It’s not like I’d have an issue finishing out my career on the newest, cleanest, largest, and most impressive vessels in the world at a lateral change in pay. I’ve been on the same class of ship for 13 years. Time to change it up and if that improves the pool of qualified top tier officers, yeah that makes sense to me.