I noticed I do not receive random rewards from opposed missions. I only receive joker tickets. This makes it impossible to unlock symbols, fonts, emotes, etc. I don't know if this was always a thing, but currently it's impossible to unlock symbols if you don't have at least 4 players, two per faction, to join an empty district to start unopposed missions.
For example, I don't not have the majority of the symbols that Arlon Benjamin unlocks through random rewards, like 'poop' and 'mon