We started using this about 3 weeks ago.  I made a skin and then we reviewed all the pieces to look at how it was assembled, then tweaked it adding things we wanted the program didn't allow.  Spent about 2 weeks doing that.  Since then have built about 5 beautiful skins and copied and pasted our modifications into them.  It took less than an hour apiece to make them.

I agree, great product for the limited time it has been out.  Some minor issues with containers.  And they need vertical menus and the ability to add additional code or options from iwthin the program.

I don't know that it's insufficient in as much as it requires enough custom work that the advantage of using it is lost.  But, for a new product, they are definitely on the right track.  Though I think the skin styles will all be pretty generic for those who use this.

Jeff