So me and a buddy of mine have been talking about this for the longest of times and we've never seen a ghost game do this. We think that it would be really cool if there was an option to explore the maps that already exist in the game during the daytime and play the game during the daytime. Paranormal activity does happen during the day as well and it's not always at night time...
Another thing to add that I think would be really cool is lightning. I know that there's already rain and then heavy rain, but I think it would be cool to be able to see flashes of lightning at night in the game while you're investigating or cleansing. Especially with the added 24-hour mode in progress later on in the future for this game. That would really be cool to like start the game during daytime, it progresses into the night, and then like a big thunderstorm happens once you're locked inside the building...