Bighorn is an amazing platform. As for Independent Suspension and Disc Brakes from the factory - don't see that happening but I certainly would not let that be a heavily weighted deciding factor when it's going to be very easily obtainable by you, living 1 state over. Plus, many dealers are willing to coordinate the installation logistics with MORryde.
I think the issue you may be thinking about is, "what about the value of the removed components" when IS is installed after-market. That's a valid concern. Not sure everyone knows this, but Tom Montague offers a coupon to all LM365 buyers for MORryde IS/DB. This coupon helps take a small amount of sting out of the upgrade. to my knowledge, this is not being offered on BH at this time.