I've never heard someone say "I'm hitting hanger zero." Pand maps would be even better if they used one instead of zero.
I guess you never run any missions with the Devil Dogs, a Rook squadron! I run missions every night of the week and hangar "0" is always used in hangar assignments and everyone knows that it is the most "Northern" fighter hangar on a small field, again on a medium field, next to in-destructible hangar on large concrete pad on North side of field!
We use the Pand maps constantly because as someone else pointed out, they, Pand maps, agree with AH numbering system.
One of my pet peeves is on some of the maps, the runway orientation is not like it is shown on the clip board map! A small field which shows a NE to SW alignment on the arena map and when you get there, its actually laid out NW to SE! Then all your approach to target planning goes out the window. To experienced guys in here, its not a big deal, but when you have a new player or inexperienced player in a mission, and they don't have maps, other than clip board, sometimes cause's double drop on same hangar!