Leblanc's Passive Gameplay Issue
Leblanc's passive is meant to create a diversion so she can escape what otherwise might be sure death. Unfortunately this passive can be abused to cause her to die instead. The issue is caused when a single ability triggers her passive and the same ability (not a subsequent cast) can utilize her passive image to have her killed. Two examples of this are Brand's ultimate, and Bard's Q. The ability triggers her passive to proc, but the same ability utilizes her passive to cause more damage and in the case of Bard stun her. When used on Brand effectively, you can use your ultimate on her at ~50-60% health and it is almost always a guaranteed kill. This removes her ability to create a diversion and escape as her passive is meant to.
A small fix to this would be to have the illusion spawn 0.5 seconds after the initial invisibility - and her image would maintain invisibility for 0.5s more so they still become visible at the same time, or having it spawn after the 1 second of invisibility. Essentially remove the potential for one ability to cause such massive, unintended impact, especially on a passive that is beyond Leblanc's ability to control when it procs.
Thank you for your time.