A weather system of some sort would really add more variety to how the matches feel, a dark stormy night on. Paradise while the sea rocks back forth with rain pouring would be really cool but would give both sides a challenge. Sandstorms on the desert styled push map (I forgot the name) would also blind a lot of players leading to more pushing and different plays. Weather overall would just really make the games feel different as my main problem is they feel very similar. This would make them unpredictable.