I know a lot of people have been wondering lately if there will be a way to tell sides apart rather than just the orange bars above their heads. But this brings up the suggestion and opens up for the depth of story that what if there are 2 set sides similar to what brink had. You would have one side the “Good Guys” who want to get the vaccines away from the corporation and give them to the average people and then you could have another organization the “bad guys” who are hired by the corporation and look like ruthless killers who will stop at nothing to get their pay.
Something similar to this:
(or just a general menacing gas mask look)
With these soldiers the people would definitely be able to tell the difference in sides and it would offer the chance to customize both sides with skins and the like. You could even go as far to brighten and darken the opposite sides similar to how the sides were in wolf with the Axis and the Allies.
Thematically it would make more sense too because these guys with the gas masks will have been at this place for a while and are probably wearing the protective gear to guard themselves from the harmful radiation. And the “good guys” are coming in from somewhere else and don’t deem it necessary to wear such things given that their mission is quick and decisive. Plus they would have probably been there from the start to guard the corporations from the inevitable riots. This would give people a nice feel for the sides and be able to flesh out the story a bit more.