The common theme that I found interesting in that material:
DirecTV clarified carefully the use of a PI on SWIM modules vs not using a PI on SWM LNBs. I'm sure this is something that will get messed up often and result in damaged equipment and additional truck roles. This is the danger in combining the PI in to the receiver on some models when other models don't have that.
Additionally, I thought the frank speaking of cost effectiveness and how removing components like the modem were central to their decisions when designing the HR54.
Lastly, they very clearly indicate it is a rolling change, like previous generations, and still today there are HR34 in warehouses to use.
It would be very hard to damage anything....