You and hayseed hit on a big issue I've had with Tesla in general. Other than the extra power, the really don't add much more content. The track mode is a nice add but it isn't something you can easily engage (at least on the M3P). The rest is just simple bolt ons I'd expected from someone in 10th grade. Not much imagination OR differentiation from the lower models.
I am a speed junkie at my core but as I've matured I want more than just raw acceleration. I understand why Tesla keeps their options simple from a production standpoint but I would like more in a Plaid than what Tesla gives you. Should have came with better brakes from the factory if your mission is to track the car as so many of you allude to.
An upgraded interior, seats, upgraded suspension, lightweight wheels, etc. I'll gladly drop 150-160k on something like that. Basically all you are getting is the LR with more power and recently the track mode. It was one of the reasons I didn't go with the Performance version on either our Y or 3. Basically all you got there though was quicker to 60 and from about 25 mph on up, a 3 or Y with acceleration boost is just as quick as the Performance versions.
At least with the Plaid, you do maintain an acceleration advantage even at higher speeds over the LR which is very quick in its own right. The Plaid is pulling like one of my slower sportbikes which is very impressive.