Hello.
This is my First request, i Hope i did not do it wrong.
In arma 2, having a mission that contains a fight Blufor vs Blufor or Blufor + Opfor vs. Resistance was a bit struggling to achieve. So my idea was, why couldn't the mission maker decide in the advanced intel Tab, wich Faction was on wich side, so you could make a mission where Blufor had an agreement with some opfor faction but was at war with a 3rd Party wich was also at war, or not, to Opfor.
most RTS games support that sort of "Team-Management", and doing so would let Arma 3 Allow even more freedom to mission Makers.
MfG SYSTEM