I don't know, I think the tree dependency fix in 0.2 was pretty huge. The rest of the stuff I can pretty much take or leave, including all the new toolbar icons which wasted who knows how many man-hours that probably could have been better spent elsewhere... But not having all my parts bork themselves because god forbid I modified a feature at the top of the tree rather than the bottom made using FreeCAD go from exhausting to use to actually properly functional -- at least for me.