nope those are all 'trivial' bolt on packages. The $6000 for the PP1 equipment is a flagrant rip-off. For half the amount you can pick from an extensive collection of equipment that is no less equivalent if not significantly superior.
I was in a similar dilemma last January. I wanted a Mustang GT 350, but the local dealers were adding a $15,000 dealer markup on top of the car $67,000 MSRP...too rich for my blood. So I decide on a Mustang GT (Deluxe) with PP2 if I could find it locally (I couldn't), or I'd settle for PP1. That's what I have the 2020 Mustang with PP1 and the 10 speed automatic. Having four modes in the 10 speed, incredible. Around town, normal mode is just fine, at the track I love Sport +, auto shifting, up and down. PP1 is awesome...I'd love to have that sound control on the exhaust...maybe Magneride...but I don't, but I do have a kick ass little car! The 6 piston Brembo calipers do the job, but will get hot...I have some air ducts on order from Vorshlag, 1 mm titanium shims that go between the pad backing and the caliper and a set of Hawk DTC 70 pads on their way. I don't want to have to deal with brake fade on the track.
If it wasn't for the different calibrations for ABS, EPAS, etc., I'd agree. But you can't duplicate them on your own after purchase. It probably doesn't matter in street driving, but it might at some point in a person's new-found track day habit. Even the base car's wrong-way-vented front rotor design can be fixed.
Then my suggestion to you is to do nothing at all until you've at least settled that matter. And spent some time figuring out just how you'll realistically be using this (or another) car.
until such time as we can see what the differences are I consider that to be 99.6% poppycock. And anyway a GT is a GT. If somehow you can recognize that those settings are hampering your road course lap times because your car originally had the 4-pots and it now has the 6, you're a good enough driver to compensate.
As for the oil and vac gauges. I thought they looked cool when I didn't have them on my 15&17EB prem's. I have it on my 19GT PP1, and I think I've glanced over at it maybe two or three times while driving (since december).
there's this tiny button by her right index finger. it opens a lovely vent and draws air out of the cabin at a righteous clip.
the cost delta is what matters and you can buy the parts on the market for a FRACTION of the ask. That exact parts mix was 4 grand in 2019. And in 2017 it was 2500. 4 grand was unreasonable. 6 is theft.
ABS and AdvanceTrac calibrations are generally tied in with the OE tires and brakes. If you're going to drive harder because of upgrading either or both of those things, nanny behaviors might not always be appropriate (the nannies have no way of knowing that you've got better brakes and/or grippier tires than what they were calibrated for).
I would add
There wasn't a pp available from my dealer but the car came equipped with the 355 gears so I went with that. Since I bought the car I've added 11x19 wheels in the back with 305 tires and 10x19 in the front with 275 tires. I've also added steeda sway bars, minimum drop lowering springs the strut tower brace and the extreme G track brace. Next up is new shocks and the rear stop the hop enthusiasts kit on the front I will be adding control arms and a bump steer kit. After that's finished I will add the six piston Brembo's. Then I will drive the car and think about if there's any thing else I want to add. Driving the car with what I've added so far I'm really happy it doesn't lean much when I turn and the front end doesn't dive when I hit the brakes. So far I'm really happy with the way the car handles although it does ride a bit harder but I think the new shocks will cure that. If it doesn't it's ok cause I don't mind the firmer ride. When everything is done I believe I will have a car that handles as good or better than the pp1. So far I'm really happy with how it's turning out. but in the end I'm spending almost as much buying the pp1 from Ford.
it'll be massively better than the PP1. The PP1 dampers are just plain crap. If your expectations are low and you don't mod cars as a matter of principle, go ahead and buy PP1 with MR (better yet a PP2 car). Otherwise the PP1 surcharge is just wasted money you won't get back.