Inherited displays showing in the display grid was one of those things I couldn't really decide on - the advantage of showing them there is that it's one less click if you want to edit the inherited displays, but it does complicate things a bit. I might remove them from the grid again.
Changing aura names/descriptions is missing, you're right. I'll add it again soon
The dialogs themselves need some polish in general, what I'd likely do is separate each display by the aura that they're in. It'll also not show displays that it can't parent to (for instance, it won't show the display that you're anchoring, because anchoring to yourself makes no sense).
The WoW error on the copy button is known, I'll fix it later.