On a purely spectacle basis it definitely spoils the game when a sending off occurs. In response to your ideas I don't think they're workable or even fair.
Perhaps an enforced substitution of the red card recipient? It would keep it 11 v 11 but any miscreant is still punished.
Was definitely a game when it looked like things were conspiring against us. I'll have to explain the yelling to our neighbour tomorrow.
Frustrating and exciting at same time. Time to enjoy the weekend football and hopefully a southampton point.