What about having rotating weather patterns on planets? And during these various patterns there are certain boosts granted (e.g. if you're in EDZ and there's a Thunderstorm, then you have increased arc damage and are more vulnerable to arc damage, hot sunny day grants solar boosts and/or vulnerability, and when it's dark out, then void is applied). I think it would add a cool spin to the beautiful environments to the game and would also make patrols, public events, and other roaming activities more fun.