Firstly, I attempted to report these via in-game bug report but it seems to be broken. When I (and a couple of friends) tried, it spits back "Bug report failed!"

When testing a Super Brawl map in the crucible, teams seem to still be enabled. Players will be placed on an invisible "team" in the order that they join (similar to Lockdown), and likewise we also have the option to "switch teams". Players on the same "team" cannot attack eachother, and points seem to be funneled to a single player on that team.

In the Crucible Editor, when using the Ground tool to place tiles, there is an option inside of the 'Castle' folder called "Floor, rug (Arena King)" which uses the incorrect rug when placing it. The "default" rug (when using "Floor, rug") is a sort of dark-red checkered pattern, while the Arena King rug is a pink-ish color with a red outline. These tiles can still be accessed by using the "Tiles" tool, but you have to manually place each tile that way.

Also while I'm here, can we PLEASE have access to the Scarlet Fortress skybox? The Castle tileset is one of the first folders in the crucible, yet we dont have the corresponding skybox to go with it

Screenshot from Crucible Editor
The northern platform is using the "Floor, rug (Arena King)" option

Another Screenshot
This is what the Arena King rug is supposed to look like