A Possible fix for 4v5 Ranked matches

Like many people I have had ranked matches in which 1 person disconnects leaving the team at a severe disadvantage. I understand that this is incredibly difficult to properly track and prevent without leaving ways for people to exploit it for loss prevented, so I have thought of a possible small solution. Instead of a system which tries to prevent losses from teammates leaving matches in progress, which could be addressed separately, a system could be implemented similar to that used in CS:GO where the match does not start immediately after the loading screen. Instead it waits up to 5 minutes in 'warm up' while everyone connects. Once all 10 players are in game the match would properly start. If all players do not connect, the match would automatically end. In the same way that players are confined to base plate for the first 15 seconds, the barrier could remain for the entire time that it waits for players to connect, without the match timer actually starting. This would fix ranked games from being an almost guaranteed loss when a player fails to connect. Obviously some slight tweaks would be required such as not showing summoner names during the loading screen and during the pre-match time. This would prevent players from searching up their lane opponents and leaving prematurely. This system could easily prevent frustrating 4v5 matches when a summoner fails to connect, without wasting unnecessary time. This system is obviously not perfect and I highly doubt I have thought through all of the problems so please leave your ideas below as to how it could be improved or why it could never work. Perhaps I missed a major glaring problem that would make this system impossible to implement so let me know if that is the case.

P.S. Be kind, I'm only human and I make mistakes.