Sorry byt but...
Sorry to be a wet blanket but Tesla has a history of "don't worry about it, it will be fine soon". While they're usually right, it gets tiresome when some of these things can be done better from the get-go.I think the loaner sales rate will drop after a while. I think there's a pent-up demand for fully loaded loaners (especially P85+'s). Plus, the folks getting loaner cars now are probably the early S buyers. I think they're more likely to have the financial resources to pull the trigger on an upgrade. If the loaners are P85+'s, I think the upgrade lure will be close to irresistible for most of them.
I think things will settle down once the pent-up demand drains.