Using the Scale Parameter with-in a Family

I’m sure many of you have always wanted to get a Scale Parameter working in some Families. A good example would be a detail component family of a 2D tree (plan or elevation). You may want to insert several instances of the same tree but at slightly different sizes. You would think it should be easy to do.
If you have ever inserted a .dwg (Import Symbol) file, you will notice you have a scale parameter in its type properties. By adding a number parameter in the family file inputting the scale factor in the .dwg (Import symbol) you should be able to make the dwg import symbol whatever size you want. Flexing the parameter and dwg with-in the detail component family works perfectly. However when you load the family into a project it won’t work!
From a post on AUGI back in the start of 2007 this was a know bug with no workaround (i.e. Revit 9.1). We are now in Revit 2010 and we have 2011 coming out in 3 months. What’s the chance it will be fixed in the 2011 release?