@metroplex The most important thing Track Mode adds is dialing back the nannies, so you can actually put power down exiting turns, use the car's full grip+traction, and slide it if you like.
It also lets you influence front:back power split when giving it power in a turn, to have less or more understeer or oversteer under power. Useful when you want to avoid the car's normal rear-heavy bias.
Lastly you can adjust regen from all the way off to stronger than normal. That can be very useful at times too. E.g. extra strong for best efficiency in twisty back road driving, or turn it way down or off for snow driving or anytime you want to avoid the heavy rear bias of the car's regen.
@ODWms Same no regrets getting the M3P. Never regretted buying a top performing car model. Done that with my last 4 cars, zero regrets, it was always the right choice for me.
Anyone with LR vs P dilemma needs to know their own driving and preferences though. Me, if I got an LR I'd deeply regret getting a car as fun and capable as a Model 3 that's always hamstrung by the nannies. I'm not a typical driver though...
Plus I value the brakes and appearance bits too. The acceleration difference is probably the least important P benefit to me, to be honest, as I'm not focused on 0-60 and almost never floor a car this quick at those speeds. (That's just me, I know it's the main point of the P for many of you and that's okay too!)