I’d say the warranty issue is a valid concern but legally they’d have to prove that the modifications caused the failure . The track mode “orphan” issue has two dimensions. On one hand, Tesla does not have a history of abandoning any hardware config. I have a 2012 S and I still get software updates that include new features. On the other hand, they do have a long history of providing new hardware that enables new software features. I’d say it is more likely that there’s new performance hardware in a couple of years that enables new track mode features. And none of today’s Ps would support it.I totally agree with you here because I don't like the stock performance parts Tesla offers, but the argument was that with aftermarket parts Tesla may not treat you the same as if you where a P3D+ for future Track Mode enhancements and even warranty. For example if a lower control arm breaks and you have aftermarket suspension, they may blame it on your third party mods instead of taking ownership of the problem had you only had stock PUP parts. The point is a valid one although I am willing to take that chance just because I want better parts.