Comment 18 for bug 196453

After watching the discussion for a while, and experimenting in Inkscape, my feeling is that the 0% special case ought to be removed. Part of the reason is that in many cases there is no visual difference between a very small opacity and none at all.

A compromise solution might be to make 0% opaque objects clickable/draggable only while they are selected, which would still serve to alleviate the worst behavior:

 - set selected object opacity to 0%
 - selection cue is still shown
 - try to drag it
 - *poof*