I think there should be an easier more obvious way to change the floor, as well as a way to change your plot time, biome and weather. In regards to the floor, I don’t think it’s particularly obvious that it’s even possible to change the floor. Call me stupid, but I personally couldn’t figure it out when I first started playing. I tried a couple commands but couldn’t put my finger on it until I (let the bodies) hit the floor, hahaha.
I think at the very least, having a chat message when the round starts that tells you how to change the floor would be great!
Weather and time are just a nice touch in my opinion. Especially for themes like winter, it would be nice to be able to have a snowy night for example. If all of these were added, having an item in your inventory to bring up a menu would be ideal and very user friendly. If not, commands would work as well.