Ranged champion harass under turret suggestion

The main issue I have with the current turret design is a longstanding one specifically about the turrets range and its ability to react to ranged champion harass. Now, I'm not a professional so I don't claim to know anything crazy about game design or mechanics this is all just my personal opinion. My main issue being that melee champs who are being harassed under tower usually have no means of counter play if they are already put behind, this doesn't bother me that much because if you lost then it's on you but I believe the turrets should act as a buffer in order to allow the laner to semi-safely play while farming under the turrets protection but what usually happens is the enemy can just sit outside the turret range and whittle down your hp while you're sitting in this supposed safe zone and just keep killing you over and over and that leads to just a complete loss with no control left in the players hands other than trying to outplay a player who is already ahead of them which they can't do because they are getting killed under tower and trying to get 1 cs leads to them sacrificing 120+ hp. So, unless your playing someone with high in-lane sustain like nasus, garen, etc a lot of the time what ends up happening is if you die once then they will have an item lead and already most likely a cs lead on you and possibly will become too strong to fight head on which is already difficult given the fact that as a melee champ you have to overcome the distance barrier to even fight them so your only hope is ganks on an overextended target which should come but never do (that's just the life of a top laner I guess). However, I DO NOT like the idea of just a turret with stupid range, in fact I like the turrets current range but what I am suggesting is a retaliation radius on top of the turrets normal radius. This could be a circle given maybe 200 or 400 more units (I'm not that familiar with distance in this game so forgive me if that's a bit much) that could proc the turret to target and attack a given target standing within that distance that strikes an allied champion currently within the radius and like turret plating can fall in the later phases of the game.