I dont see how this would devalue the P3D+....its already taken a crazy ass hit by the fact that you can buy it today for 74k, and it was like 90k back last september ( when you paid 85K for P3D-, then added the performance package which included wheels, etc for another 5K or so). That same car today is 74K and includes white. If you bought a white P3D+ last september, you would be another 2600 for paint, so overall a P3D+ in white is 21k cheaper today when factoring in tax.
As someone who loosely dreamed about getting a P3D+ (very loosely dreamed), I'm super happy I didn't do it. Its the one thing giving me some solace about the fact that even the AWD I own is 10k cheaper today than when I bought it...yes, I'm taking comfort in someone else's misery...never said I was a good person
So, I say that devaluation of the list price is way more upsetting than offering a 3-5k upgrade to go from an AWD to P3D-....In fact, everyone who got a P3D- had the option to give up their supercharging and get a 5K USD (6500 CDN) + tax refund from Tesla. This puts the upgrade route into play in my books....obviously this is with the assumption that it is just software unlock and no other hardware is needed. I've read the threads talking about different inverters required, longer burn in for motors, etc...but no one has conclusively proved this. Everything I've read so far has indicated that they are the same car, just software limited...at least I'm holding out hope for that....
Plus; when has any company (not just Tesla) avoided doing something that can make them money, even if it pisses some people off?