I've attempted to design 2 complex skins now and have been met with more problems than it's worth. Trying to convince vBulletin Solutions their style sheets and coding aren't proper is a waste of my time, until those are fixed I wouldn't expect anyone to release anything.
Not to mention the variables are still changing for some reason, there are at least 3-4 that were changed what they controled in the 4.0.1 release, making the 4.0.0 not completely backword compatible already.
What. A. Joke.
There are limits to what you can do with 4.0. Maybe start with some skins that are not so complex. I learned how to convert my skins in about 2 days of playing with the stylevars. I now have 17 custom skins for my members to choose from. I can convert 2 skins per day only working maybe 6 hours max (3 hours per skin). It is simple, it just takes a little time to learn it. Before 4.0 I never had any success trying to do any skinning.