I propose to implement the change of the time of day during the round, namely: morning - middle of the day, middle of the day - evening, evening - night, night - morning. Also the weather change during the round: morning fog - a clear day, a rainy night - a clear morning, etc. All this will help greatly diversify the gameplay and at the same time, game modes (such as rain and fog) will not bother players. I also propose to introduce weather conditions - a strong wind, at which all sounds will be audible very badly.
And on both maps, the fauna will be very appropriate. on the Erangel birds sing (on the miramar some grasshoppers) and if there was a battle in this place, then the birds will stop singing and in this place it will be quiet.