I did a quick search to see if this has been brought up before, but did not see it anwhere. The mirror component tool has always been and probably always be a source of frustration, as it is a complicated tool. One thing that bugs me is the display state of the preview you get when you are given the option to reorient components. (Everything is transparent with no edges shown.) You do get an option to isolate, but then it is hard to know what the proper orientation of your part should be. This seems like it would be an easy fix to give us some options on the display state of the preview. Note that I am running 2013. I know that significant upgrades were supposedly made to mirror component in 2014 and am hoping this was one of them? Anyone else having similar frustrations?