Please fix dominion. It's bad enough it's a burst champion game but disconnection disadvantage is unbearable. True people win 4v5 if it is only briefly and were dominating. But that's so rare. The majority of times I see teams lose is because on side has a disconnection. Options could be that while someone is disconnected that team earns double gold per 5. Other ideas could be the enemy team moves slower, increased time spent dead. Anything to make it so disconnects don't ruin the game. Perhaps if 1 person is disconnected the other team gets IP equal to if they won, since it could be viewed as a draw. The person who disconnects however gets nothing, as they should.

Please fix it. This ruins games.

It's a problem, but your solutions would only swing the game so the disconnecting team has the unfair advantage.

It does ruin it, but most systems in these cases are easily able to be abused.

Once you climb elo you start seeing dc's more and more rarely. Whilst they do ruin the game, it's only 10 minutes usually in 4v5's as opposed to the 20+ in summoners.