I would love the ability to use non-lethal rounds.

When I was last in Iraq 2006-2007 we were prohibited from using them by the lawyers. The legal reasoning was that sometimes these rounds can kill. Therefore, you can only use them in situations where you would have justification to use lethal force. In said situation, better to use the lethal force than use a non-lethal round that accidentally kills.

I didn't agree then and don't now, but that was the reasoning. Love the lawyers.