It won't be that easy monkeychow. The pow button can be a func_door, with its compass thing set to up. But I can't work out how we will get the Pow button to knock all of the monsters upside down. And because It is a rather low detail map, I think we should focus a lot on making it more interesting, either with a background, or more detailed textures, just to make it look not so boring. Of course we will make that map EXACTLY how it is, for people who like old school stuff, then we will release a different version, with more detailed stuff.
And I think a lot of detail should go into those pipes. They look very circular, and I think we should keep them looking that way. Square cornered pipes wouldn't fit the level IMO.