First, not everyone will care to trade better phone integration and reliable non-beta safety features for the additional battery warranty.... If Taycan end up performing the same as my P85D but with better safety and tech features, able to sustain speed without limiting power, and able to charge at 350KW, I don't want Tesla values to drop if I want to trade my P85D for a Taycan.
I think you rather miss the point.
The reason that Tesla residuals stay high are precisely beacuase you can buy a used one with negligible drop in range.
Whilst we have no idea what Porsche are truly doing, it's pretty clear they are pushing fast charging. We all know that battery design is a balance of parameters, so fast charge is will be at the expense of longeivity. Fair enough you say, you would rather have more Porsche things at the expense of range.
But then you come to sell. Questions like how often has it been fast charged, has it been derated, what range is left - you know all the typical questions on here, suddenly are magnified. Result - depreciation. Who's going to touch one that might need a new battery.
Careful what you wish for.
Tesla have carefully pretty much negated battery degradation as an issue which has in turn given great confidence in EVs, this may yet prove to be their strongest suit as others fall foul of this in their efforts to compete.
I still believe that the Taycan will be a great car, it absolutely ought to be, given it's from the stable of one of the world's largest manufacturers who have had 8 years to study Tesla.
Will it eclipse Tesla - I doubt it, but what I cannot stand is the BS from Porsche/VAG though, very much typical of their style these days but entirely unnecessary. For that reason and the lies and weasel words of dieselgate I dont care how good it is, I will no be buying one.
Frankly I am astounded at how quickly people will overlook such corporate malpratice in their own self-interest