Riot wasn't looking to nerf the champion, that wanted to make it a champion with a clear playstyle and also clear weaknesses.
Lucian is a ruthless hunter bent on getting vengeance on anyone (mostly just Thresh) who took his wife from him. His playstyle now reflects that: He has high mobility and light-slinging is a must and he is constantly weaving spells and movement throughout fights.
It really fits him. This is how I fell in love with Lucian and to anyone else who favors this, this was a great change. Our favorite way to play Lucian is being amplified and he was given a clear cut in areas that didn't fit. He now has pretty bad siege potential and his laning phase is more reliant on his skills and his ability to maximize his spell weaving to stay alive or try to get kills.