Disconnecting as soon as game starts and you are not able to remake

Just had a ranked game, where my top lane nasus never joined. It showed that they disconnected rather than not having connected. With remakes you can only remake if someone fails to connect. The nasus joined then left instantly. which means 4v5 in a ranked game. instant loss. This needs a change. The game should notice if someone fails to connect or not. Whole team decided that the game was not worth playing out. I pushed for an idea that we at least try and win rather than give up (its low elo and anything can happen). Team said no FF 15, i disagreed so they all ran it down to show they can't win it now.

TL:DR PLEASE ALLOW REMAKE IF A PLAYER DISCONNECTS AT START OF GAME (LIKE LEGIT WE HAVEN'T LEFT FOUNTAIN AND HE DC)