Cool Features i would like to see in the new summoners rift :)

well, since there is a night and day function in the new summoners rift map, i thought that itd be cool to add a weather feature!!! at random times in the game it could start raining, get a little windy, or maybe the aurora borealis in the northern part of the map? and maybe it could also snow? :P but i see the downfalls to this, and how it could lag the game a lot for players on a slower computer but there could be an option to just remove this. I would like to hear your thoughts on this idea and how to make it better ! :)