/remake

Just played a game where my mider couldn't connect from the very beginning. Obviously, I just wanted to make a remake, but 2 minutes later he reconnects and just leaves eventually after a couple of seconds! And we have no choice other than play a game that is already lost! Riot, why can't you think of another way of recognising whether the player have ever been in game?? For example, make a player who didn't receive any XP during first 3 or so minutes count as a leaver. Why not? It would definitely mean he isn't in the game, especially if he left and then returned. It feels completely unfair, that in theory I can make a remake in that situation but in fact I can't.