You've seen the title, and probably thought one of two things "That would be awesome!" or, "That would be lame." well if you thought the second option, or just want to hear about what I have to say about this, hear me out.
I'm sure we have all experienced what it feels like to explore your maps for the first time, not knowing what will be around a corner. So imagine, having that experience on a set day monthly. awesome right? but lets talk about the elephant in the room, our grinding setups. Yes, as a grinder myself I could see at first glance this could be anoying and just painful to find my zones again, but I feel that this could really mix up the grinding and make it fresh again. and with a set day the the population reset happens, we would have a deadline that we would have to, for example get a Great One. Thats all I have to add to this, feel free to comment your opinion on this idea.