Though a small thing but significant I asked Ross about Thermal Imaging here is your answer from Him, We incorrectly believed that the thermal imaging was not going to be used in the Ashes test series, this is being corrected and it will be introduced.
This is something else that’s wasted and a thing with the whole DRS.. thermal imagining is pointless as its so so obvious when there is an edge. Your never wondering what if.. or punching the air when you see a little hotspot.
Just a lack of imagination in that area.. make some edges inaudible. I know people would then say it’s a glitch but be creative…