[{quoted}](name=Warlord Zudane,realm=NA,application-id=3ErqAdtq,discussion-id=BbqsvhPr,comment-id=0002000000000001,timestamp=2016-10-04T20:10:08.462+0000)
But here's the problem with it... If you are fighting another champion, it's not a big surprise you are there. But if there's a team fight that might happen near dragon and you're pushing top you certainly don't want to attract attention that YOU are there taking the turret.
Think of it. If a minion takes the turret then the enemy team's wave is pushing and since it's closer to your turret it'll start pushing back. Simply put it'll fix itself for the most part. But if a champion is pushing that minion wave then you NEED to go back to it now. So if you are a champion pushing that minion wave, then let the minions get to it, and when it's nearly dead and the minions can finish it off then back off and let them take it. Then there's a global message that a minion wave took a tower and you are already in the fog of war and the enemy can only guess to where you are.
But if we were to make it so if a champion hits in the last 5 seconds then it's an assist or kill for the champion. Then this same scenario can't work, unless you just push minions against the tower (and it goes a lot slower) without getting caught that you are at that tower dealing damage.
I mean, if the enemy team has that little map awareness to not see you splitting, I don't see the difference between you walking away and backing without notice on the kill feed and getting noticed and walking away in the time frame while a reminder shows up that you were there.
If I see a split pusher leaving, or even a tower falling I'm running up there whether minions finish it or not for wave clear or to catch them backing. If they dedicate looking for you then they catch you, but if not you're gone and even if they look for you and you still leave early enough, you're still gone and out of there.
If anything it would split the enemy team up to run top lane for example, knowing you were up there only for you to leave anyway and all they get is wave clear while there's a teamfight elsewhere without you or them.