As has been said, it's each to their own really. A good mix of options is going to help resale...but that's presumably not why you're buying the car?
Based on experience with buying my 993s, I made a list of 'Essentials', 'Highly Desirables' and 'Desirables', each in priority order. I then measured each prospective car against my list, factoring in such lesser factors (for me) as colour and mileage, in order to judge the 'value' of any particular car to me. At times I had to discipline myself to stick to my list, rather than being carried away in the moment when viewing a particular car. For example, manual and 2WD were top Essentials for me, but every so often I'd come across a nice car and could feel myself thinking..."..maybe PDK is OK for me, or maybe that 4S is too good to pass by..". But my List, which in my heart I wanted, saved me from a number of speculative purchases.
Some of my list could be easily retro-fitted, such as a different style of wheels or cruise control, but if I came across a car with what I wanted fitted from the factory, then so much the better.
Anyway, in the end, I got 14 from my list of 17 parameters. I got all my Essentials, all bar one of my Highly Desirables (TPMS), and had to forego a couple of lesser Desirables, which for me, were BOSE and Rear Wiper.
The hunt was long and expensive in time, but in the end I was pleased I got, pretty much, what I wanted. As I said at the start, it's all very personal.....
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