My original point was that you guys seem thrilled about having the privilege of paying for something that in my opinion and the opinion of many others we thought we had already paid for and should have had at time of delivery, or, in the very least, should have had provided at no charge later.
Andy, just to set the record straight: when you and I (and all the other early P85D adopters) bought our cars, the advertised 0-60 mph was 3.2 seconds, and the car delivered that.
The 1/4-mile wasn't published until after Ludicrous came out, so let's leave it out of this discussion for now.
At at some point, and to the surprise of many of us, a software update lowered the 0-60mph down to 3.1 seconds.
When Ludicrous was announced, the $5,000 upgrade lowered it even further to 2.9 seconds.
So as far as that metric is concerned, I disagree with you that we are "paying for something that [...] we should have have had at delivery", since we already got more than we thought we'd get (3.1 vs 3.2 seconds in the 0-60mph sprint).
Now, as far as the higher speed performance is concerned, I agree with you that we rightly expected a 691hp car to have better acceleration at speed.
Even though Tesla correctly advertised the P85D as having 691hp *motor* power, they probably should have also put a disclaimer that you can't get all those ponies to the motors due to battery limitation, or better yet shown the battery-limited peak power as they do now.
Anyway, my point is that for $5,000 you get more than was originally advertised in the 0-60mph, and you get higher-speed acceleration that is more in-line with how the P85D should have performed at delivery - although that is harder to quantify since high-speed acceleration (e.g. 50-80mph) figures were never published.
Some of us see the upgrade as a huge benefit, some see it as a waste of money, some see it as an upgrade that should have been made free to restore faith and expectations.
Since it's hard, if not impossible, to separate the 0-60mph benefit from the high-speed acceleration benefit, I understand and appreciate Tesla's effort it providing both benefit to us at a price that probably just covers their cost.
As my signature indicates, I am not trying to argue with you (or anyone) at all, but would just like present some facts that may help you see why some of us view this upgrade as a valuable benefit.