I repurposed a design this week. I designed an industry conference booth for one of my clients in 2006. I discuss this booth in my October 18, 2007 blog entry.
Their corporation partners in Belgium loved the red center design so much, they wanted a 900mm x 1200mm (approximately 3' x 4') poster version of this design. I had to keep the integrity of the image layouts, while shrinking the overall size and expanding the dimension ratio. I think the results turned out well.