I'd like something definitive from Heartland also. I talked to parts and sales today and no one could provide any info on the rumored bike rack for Landmarks. They told me to call Lippert. Lippert has one, but said installing it would void their frame warranty because they'd have no way to know if I were using it appropriately. Then they said that using it to carry bikes wouldn't damage the frame. They couldn't explain much about the offering and the clincher was they wanted almost $700.
Guidance on a reasonably priced bicycle rack that won't damage the frame would be a good place to start. Maybe point to a 3rd party solution other than Lippert. Maybe negotiate with Lippert on what is ok to hang on the frame and what is not ok.
I saw a guy with a SOB in Death Valley,California, from Canada. Which means he had traveled quite a distance. He had a 1 1/8" receiver, on a fiver with two very large quads on a trailer behind it. Had to have weighed at least 1200 lbs.
You see where I am going with this.
Had something happend to the frame, etc. , I'm sure he would have said he only had a bike rack on it. The mfgr has no control over the useage. IMHO, this is why they got rid of them.
His receiver was undoubtedly designed only for a bike rack