Pongo that's what I meant in regards to numbers per side on a particular frontline. This should also include GVs. I assume the dar bar system accounts for certain amount of players per sector.
If the player in that sector is not friendly then it equates to a percentage of the actual darbar displayed in red. If it could go a little deeper and use the number of enemy dots and link them to a side then we could account for actual numbers playing, what country they are, and what sector/frontline they are fighting on in comparison to another country.
Using something similiar to this you could possibly tell exactly who is fighting who and with what kind of numbers they are using. I may also determine if particular side gets limited on aircraft (bomber or fighter) and gvs. Again I have no clue as to what it would take to make something like this. I may be a coders nightmare for all I know. But it would be fair when it comes to limiting and if folks keep chosing to fly with excessive numbers it's their own fault for the limitation.