After a few years of searching I think I might have found it - the perfect wrap dress pattern. To be honest I haven't tried a vintage Diane von Furstenberg pattern. They are probably the ultimate in wrap dress patterns, and unless I find one cheap in an op shop it is unlikely I will try one.
Onion 2037 comes pretty close to perfect. It is really quite simple and has a great way of attaching the ties and neck binding and it doesn't gape at the front.
The only thing I might try and change is to lower the front a little so it ties a little lower.
I used some polyester (I think) jersey from the stash which was annoying to sew, but has the perfect drape for this pattern. I am not sure where it came from and has been sitting in my stash a while. I'm not really a pink person, so I haven't grabbed it out to sew with in the past. I thought I would just try it with this pattern and if it didn't work then I wouldn't have lost much, but I really like it sewn up.