I was sad when Track mode was announced and it was suggested it would only come to the upgraded P3D's. It really made me want that package but I'd have to live with 20's and I couldn't swap them for smaller ( I now know you can get special 18's for the P3D+). I was also bummed that if I ever sold my P3D-, I'd have to concede it couldn't have track mode and possibly lose some buy interest.
If Elon gives us ALL track mode, It will totally redeem the fact that I could have had the "+" upgrade for the same price. I've already been granted unlimited SC.