To attach the lace corset panel I had to come up with a thigh split. Since the skirt didn't have one I decided that I could get away with having the entire thing off-center and use the side seam as my slit. So the waist closure ends up sitting to the right of my thorso rather than centered, but since I always wear this skirt with a belt anyway you can't really tell. And I like to think that the pinstripes conceal the fact that there is an off-centered ex-side seam running along the back of my right leg. Oh well. (Of course, I also could rotate the skirt to its proper position and just have the thigh split be a side split but I just don't like the way it looks as much.)
All in all, I considered this project a moderate success. Granted, the whole thing ended up looking so weird it could only be worn as a costume, and it is in fact the only way I've ever worn it. But one thing is for certain - those pants are no longer sad!