[:-]It makes sense from a unit point of view, but not from a group point of view.
As the guy in command (that's what CMANO is about, isnt'it ?) you want to know where they can go as a group.
I would suggest displaying the worst case (shortest range or time left for example).
Especially for a group of 12 or 20 aircraft, which you do not want to check one by one.
Well, about the range it's more important for short-legged fighters than for ling endurance support A/C (AEW etc.).
So, range at cruise speed for example (I expect it's close to "best range").
Sorry I do not get what you mean by "fuel over home plate",
but it should take into account the fuel required to get back home + margin, yes.
There's also the question of refuelling, how is it taken into account ?
In fact, the internal working of CMANO might give clues
(how does it decide that an A/C can/should refuel rather than RTB, etc .)
However, a simple range indication even without refuelling might help.