I will estimate that in truth maybe 5% of LR4's will have the HD package (at least in my market).
Reason being, competition between dealerships is fierce and any specialized option that could mean "our" LR4 costs even $300 more than "their" LR4 means the customer is probably going to buy from "them". Aside from the HSE package and Cold Climate Package, the available options are superfluous to 98% of new LR4 buyers. Often we dont even add DAS digital/satellite radio ($750) to the trucks we order because we would rather have a $750 cheaper car to sell. And in the scheme of things DAS has a pretty broad appeal especially compared to the HD package.