I wish Autodesk would bring back the step-by-step tutorials in Revit 2012 that I experienced with my 30-day demo of Revit 2010.
I did download the 2010 tutorials from Autodesk's web site; but they changed the interface just enough between 2010 and 2012 to make it frustrating to find where the new stuff is hiding.
I also wish the Help system was useful again. The Wiki site Autodesk uses now for its products is a nuisance.
From an old school CADD grunt.