There is art involved but Ill put it under suggestions to be safe.
For awhile I've had this idea for a Devilite boss. Not only in terms of terms of the boss mechanics but also the lore, setting, ect. I guess I'll start off with the setting:
https://dl.dropbox.com/u/18165944/Terra%20Firm.png
First depth would involve a desert environment. Chromas, Devilites, and wolvers are scattered about, as well as a new mechanism I came up with involving giant fans connected by switches. By hitting yellow/violet switches, it would alternate what fans are turned on, and these fans would blow barriers, enemies, and even other knights to the edge of the room if you arent careful. However you can move from the stream, but it would be impossible to move towards the fan until turned off. I can imagine this making interesting puzzle and battle rooms (I also illustrated this, but I cant be bothered to finish it atm) https://dl.dropbox.com/u/18165944/battleroom.png This is an illustration of what a little of the inside of the pyramid would be.
As for the lore, I imagine it'd be an interesting idea to have all pit bosses under 1 boss, who is currently running an oil drilling facility inside a pyramid. So with that having been said, I can imagine undead and oilers moving about, but I'd hate for it to be a repeat of Compound 42, so I'll let you guys decide that one. As for the boss, uh, I came up with this: https://dl.dropbox.com/u/18165944/tycooner.png
Any other ideas? I don't seriously expect OOO to use my idea but it was fun coming up with this stuff P:
Devilite boss has been suggested twice I'm blanking on by who but I know they're there.
Second why in the desert? They are company workers that file thing they're your typical office worker, mining oil is for the gremlins.
Third I like the first piece that's a nice piece of art. ;p