Faction Skills expansion
As it currently stands there are 3 factions each with a team-wide Trait that encourages teams to at least have 1 of each faciton to get the boosts from all 3 factions. In the future, I could see new factions getting introduced with their own traits that can eventually lead to teams needing to choose which buffs they think will work best for the game-mode, map, and team composition. I would not want to end up with "crutch" skills however, like a skill that it so good that the team would be at a significant disadvantage without one of their teammates sucking it up and playing that specific faction. In the future, each faction could either have a set of skills to choose from, or there can just be several more factions introduced, that give teams a plethora of options to choose from.