No.
If it were up to me, I'd make surrenders harder, not easier. Any game in Bronze or Silver can be thrown at any time and often is thrown at least somewhat. The only way to lose a game in Bronze is to give up before the opposing team throws. Someone will start making the "we can end" or "we can baron" call too early and get their team aced. Someone will flame because the support was caught out or because the opponent went to 3v1 the split pusher. Teammates will refuse to group. People in higher rankings throw games too, just usually not as often or as hard.
I had an entire topic about a set of icons near the FPS and ping indicators that show some requirements for surrender. One was Gold, with a coin icon that turned red if your team was 10k gold down. One was Towers, with a turret icon that turned red if your team had an inhibitor down while the enemy team had outer turrets standing. One was AFK, with a "4v5" icon that turned red if a player was disconnected. One was Kills, with a sword icon that turned red if your team was down twenty kills. And unless one of those icons was red, no surrender would be allowed.
Surrendering more games because of salt instead of learning things to use to play from behind in the future is a bad thing.
