Charging to hit more than one Survivor can be pretty difficult, and it's frustrating for the Charger when he's already committed to a charge, but mid-way through he realizes that the Survivors will not be in the position he expected. He ends up crashing into a wall and being unable to move out of the way as the Survivor team riddles him with bullets.
As a solution, it would be cool to have a plugin that lets the Charger abort the charge at any time (without resetting the charge meter), so he has a decent chance to retreat and reposition. I don't think it would throw the balance of the game, and it would save the Charger a ton of frustration.