I'm only now getting into RAC 2013 after working in RAC 2012 for awhile, but for some reason or another, the first thing that I noticed was that you are no longer able to override text to be transparent for a particular view (override graphics \ by element).
Just wanted to confirm that this is correct and I don't have something funky w/ my Revit. It's not a big issue, but I remember having some cases where transparent text was necessary, but instead of having 2 types of text types for every size (e.g. 1/8" transparent, 1/8" opaque, etc.), I could just have one style that is set to opaque in the type properties, and when necessary, make it transparent by overriding by element.