sorry - i swear there used to be a post where people threw around suggestions, but i couldn't find it :)
i'm sewing up a butterick 4310, which is a jumper with gathered suspenders of a sort, and there are options to do shorts, a skirt, capri length and full length.
http://www.bing.com/images/search?q=butterick+4310&id=DB37B7608CDCA06770FFEA979D6C3C6D2C5AEB6D&FORM=IQFRBA#view=detail&id=DB37B7608CDCA06770FFEA979D6C3C6D2C5AEB6D&selectedIndex=0
i know you always aim for a certain sense of style (not vintage, etc) when you design, but i wasn't sure if this fell under that category to you, or if it was possible this would work as a future pattern. i'm not as pleased with the construction of this pattern and am changing it up as i go, but i know it could be so much more awesome, LOL, if it came out in oliver and S fashion.
anyway, just checking/giving an idea! thanks!