Many discussions on the MT-6speed being notchy when cold, to the point where it's basically "normal". Mine isn't to bad, I notice it from 2-3 gear but my car does't sit outside so the tranny isn't super cold.
I got caught up "in the spur of the moment" on a regular 2020 GT convert. back in March. regretted the convert. and the A10 tranny, so traded it for a Bullitt not long after. I learned a lesson, get what you really want.
I've been reluctant to drive on the Michelin PS4's in the cool/cold weather. I'd probably take it out more if I didn't worry about damaging them. They stay warm in the garage so no issue there.
I just consider my black bullitt as a trim package. And I have racing stripes so I KNOW mine isn’t a “real“ bullitt. It’s a bit different and that is ok with me.
I had a 2020 GT premium with the "regular" stereo system and IMO it was terrible for a top of the line mustang. I have the B&O in my Bullitt and it is leaps and bounds better.