I have owned 4 Porsches, still own two of them. One is a race car, and I'm also a certified instructor with PCA. And FWIW, my father-in-law is a contract employee for Porsche, he instructs at teh PEC in Atlanta.
The Mission-E, like the Panamara, is a 4 passenger car (though the Panamara wagon is a 5 passenger). Not an option for me. I have an M-Spec 535i I am considering replacing (basically has the M5 suspension). I was absolutely blown away with the handling of the S. Now granted, I was not expecting a whole lot, and I wasn't able to take it through the trenches, but it was much more nimble than I expected. It helped that it has the 21" wheels. I'll be bringing one home overnight tomorrow for a more thorough evaluation.
I also, frankly, don't trust Porsche to get it right. IMS bearings on the M97, cranks on the M97, #2 rod bearings on the 944 family of engines is just scratching the surface. And my experience as an engineer trying to work wiht German engineers is that they can be a bit overconfident and complacent (American engineers have to show data to prove they need to go to the bathroom! German ones, again in my experience, are inherently trusted, and don't have to show data to support their position). Porsche makes some absolutely phenomenal cars, handling wise. That is without question. But the rest......who knows?
Plus, think about why there aren't many diesel Cayennes running around. That car is an Audi wiht a Porsche badge. The 924 had an Audi engine. Porsche has no SME's on electric cars. WHo is doing the work? Porsche, or some contractor? And if Porsche, why would you trust them to get it right? And then, repairing it will cost 4-5 times what it should (or in Audi's case, first oil change for a TDI Q7 was quoted at $650).