Lucian needs to be nerfed - even after 4.18
I just find it somewhat humorous that no other champ comes to my mind who's weakness is being too strong. The only way I have found to beat Lucian is not mechanical or items, but that the Lucian has to be somewhat stupid, and you have to catch him doing something stupid.
That being said, Lucians get away with doing stupid things very often, and it is merely the properties of the champ that saves them, not individual skill or knowledge of the game. I mean just getting a flash out of the guy is a victory in itself.
Lucian is so strong that, when he is played, there is just a complete dominance of the lane. If you are a superior player, you can still easily get screwed over by his insane burst. However, when you have the advantage and attempt to use it, he simply dashes away.
There is no beating a good Lucian in lane. I, myself play Lucian quite often and I am constantly calling BS with most of my OP maneuvers. I literally feel bad for the other adc. The skill level to play Lucian is so low, yet he has so much mobility and can make plays very easily. I mean, there is such a skill gap in my mind between a good Vayne, for example, and a good Lucian. Vayne requires so much more practice and skill than the champion that simply dashes to you, autos, Q's, autos, and by this time, over half of your HP is likely gone, and you've only been able to reply with maybe 1/4 of his health.
I have played countless games against, and as, Lucian. Many of which as his hardest "counter", Vayne. There is no counter to this guy, he is BS.
Either he needs to be nerfed, or virtually all other Marksmen need to be buffed in order to keep up with this new game.
EDIT: For a nerf, I would suggest a slightly longer reaction time for his Q (even with 90 ping, it is nearly impossible to dodge), that his passive does not crit, and even perhaps that relentless pursuit does not go through walls (this guy escapes too well). If you can't do the last one, at least buff Vayne to be able to tumble through walls...