The recent S550 platform Mustangs in the last ~5-7 years of development have dramatically moved on from the old "point and gas" formula, and are really compelling engineering-led products now, with suspension and handling refinement that most people would associate with top tier European brands rather than a muscle car. It's kind of amazing to see what they've done to refine the Mustang chassis and suspension from both a design and tuning quality perspective, honestly. It doesn't drive the way most people expect based on the image they have in their heads about the brand and the product, even if they have relatively recent experience with driving them in late S197 or early S550 variations. And the new S650 chassis (FR) looks to be an even more radical evolution of that approach. So I can't imagine what they are going to do with a bespoke MR platform spun off from the same world-class engineering team.
To take a step back and look at it broadly... I think it's possibly the pivot inside the company that happened with the Focus RS and the Hoonigan brand attention that un-stuck some of the old guard (or led to their retirement), and the product goals really shifted subsequently across their whole portfolio. I think they realized that the Boomer demographic was shrinking, not growing, and they were going to have to appeal to a younger car-culture demographic that are MUCH, MUCH more knowledgeable about actual automotive performance (and have far higher expectations) than the traditional Mustang customer. Or Bronco customer. Or any of their other core image products. It's an exciting thing to watch.