I have done some work on my Mystery Shack but for some reason, am not able to update the current listing on the lot here on TSR.  Please head over to my blog to see the new work.  That said, I am currently working on a renovation of the Science Lab lot, to create Aperture Science Laboratories ("A Trusted Name In Science") from Portal and Portal 2.  This is a much bigger project than I'd initially realized, so watch this space, or my website to see the progress on that.
As you can see, I have updated my banner and have several more CC projects as well as new Lot builds on the way!  Let me know if you'd like something or give me a comment! 
Be Seeing Ya!

http://www.diranda.com/stormravenssims/