I've asked HT many times during these past years why we can't have realistic gauges for the planes that should have them, 109's and 190's didn't fly around with a US dash board measuring MPH and feet, that's almost only the US and Brits who do (wich is the minority of the world but maybe majority of AH).
The reason I've got in the past, is that it would be confusing for people, one gyu saying 5km and another one saying 5k. OK, I can understand that although I don't agree with it.
However, we have Combat Theater now, where historical setups is allways on, country planes vs another countries planes.
Now, this adds a whole new thing, flying around as LW using MPH is taking away a HUGE deal of realism.
Allso, in the CT there are the same sort of planes in the same country, thus saying "he's at 5km" would make everybody understand.
Atleast make it an option to choose between Miles and Metric system!