That is a great idea!
Love the pull out trays for the thread, and having it on wheels is neat too. I was going to put some storage in my new quilting area - and it will be sort of a fixed shelf in the middle of the room (works as a room divider/design wall). Since it's not my main sewing area, but I will want to do some sewing (like binding quilts) something like this would work great. I could roll it under the fixed shelves when not in use, and pull it out occasionally when I need to iron.