in terms of more 4K content..I'm with you. They obviously have the space for at least one channel full time..540 is in 4K all the time with the Planet Earth placard. They could loop in some demo content or make some deals for some sports content. At this point it's obviously as much agreements as it is space on the satellites
for HDR--HDR10 should be capable with a software upgrade. Dolby Vision requires a hardware chipset, so it will never be DV capable. It should be pointed out that HDR requires more bandwidth, so they may not be able to squeeze enough space on the satellites for HDR content (although it'd be nice to get HDR from Netflix/On Demand)