DirecTV has been licensed for Ka at 101 for years and an existing satellite at 101 had limited Ka capability for testing.
And what license is that? None that I am aware of other than uplinks and control.
I think what it means is 1) they expect T16 to launch sometime next year (since they currently expect to move T15 back sometime in 2019) and 2) it is to allow them to retire D5, which means they need a satellite at 101 able to reach Puerto Rico so they can still get guide data etc. once D5 has left 110 for the satellite retirement village that awaits it in parking orbit.
They probably originally planned to have T16 in place before D5 needed to retire, but it always takes longer to build and launch a satellite than planned...
This one sounds pretty logical as everything about this move says temporary business need.
My memory is fuzzy but I remember something about DirecTV licensing Ka at 101 to preclude a competitor from parking there. I also think DirecTV would never broadcast Ka from 101 because it would be a nightmare making an LNBF with a dual Ku/Ka feed for the same slot. I believe the reflector would have to be larger to make up for the losses.
Why would the reflector need to be larger?
Slimline dishes are focused on 101 anyways, and KU at 101 only requires an 18 Dish.
If anything having a KA signal right in the center of the dish should be stronger than the 99 and 103 signals.
Other than that, this sounds like they just need permission to move around satellites and this move would be so they can take traffic off another satellite so they can move an existing satellite.