Have you got a link to what you're reading? The FAA spec has been 20x14x9" for some time.Just checked the FAA website and they say 45 linear inches and the Caseclub compact is 46.5 linear inches... Hardly a 20% outside the requirements, closer to 1%.
I just checked the gopro compact case and it is 46 linear inches and they advertise as carry-on.
At any rate if people are interested in caseclub making a insert that can hold the Itelite & rc attached let them know.