They could offer the Ludicrous upgrade at no charge, which would get the cars a lot closer to the HP numbers they were supposed to make in the first place. While I don't know how many people would be satisfied with that, it would be a gesture that shows they are at least willing to work with their customers in good faith.
That they were supposed to get according to you and some others. Not according to how Tesla has now demonstrated they got to their numbers. Now that they have, your (probably rightfully so) assumed 691 actual hp doesn't fit with their 'motor power' definition. Since I believe they always described it as motor power in the US you don't have the same wiggle room the Danes have with the mistranslation.
They did offer the upgrade at a discount which is their way of trying to smooth things over for the imprecise way it as advertised and the confusion it caused. They weren't forced to offer that but did. Free would be nice I'm sure but your car still does the 0-60 as advertised with the rollout as explained in the blog.