Idea for Nocturne Buff

A couple of weeks ago there was a post about allowing Nocturne to travel through terrain while in his Q trail. That might be going to far, but it could be a great addition to his kit if he could move through walls while in his Q trail and with his W up. He's kinda underpowered right now, and this could make him viable, along with adding a real decision to his kit: "should I burn my shield to get through this wall or save it for their stun?"

A particle update to the W shield would be nice too. Something that's more like him fading into shadows would fit the purpose of this ability and the terrain movement better.