The question over-simplifies other issues.
-Tesla negative camber still blows out, to about (-2.5) degrees at the low setting.
-I understand current T Sportline spring rates are higher than stock. Do we want higher than stock?
-Tesla's ride heights are all over the place, including slopes. P85/P85D are close to Standard SAS front height, with S85 much higher.
-P85D/P85 rear coil heights are closer to S85 rear coil heights, which (by my measure, w/digital level) are a full 3/4" higher than Standard SAS.
Point being, some may want to equalize the coil heights, dropping only the back of the "P" coil cars. Given what I think is an exaggerated need for SAS, to clear objects, I'd prefer 'Low' or 'Standard'. But I don't even run -2.5 degrees at the track ('Low'), and don't want to budget for straight line tire wear or other Model S owners who can't drive. To sell more springs, offering camber solutions might help T Sportline. As it stands, OPENEvse has stopped selling upper links and Tesla appears to have modified one end of this part, to accommodate a ball joint. With Tesla adopting and subsequently dropping the use of better camber adjustment bolts (I'm told "They still slip"), lowering the car still seems tire-pricey. Put another way, spring solutions don't "pay for themselves" like fixing camber can. And the camber fixes can apply to all Model S's.