I have found the most annoying thing about the software.

When you are placing your pattern around the 3d model, the "Gizmo" for rotating and tranning doesn't maintain axis.  Meaning, if you are at an angle, XYZ all changes to match that angle, rather than hold to their original location.  That means all of your edits go wonky in 3d space, making a LOT of extra work dragging crap around an already sluggish interface.  (Quad core here, lots of memory, 64 bits the whole deal)