all good suggestions.
THe K/D i wouldnt exchange with the described new option, but "add" the K/D option as you described it.
So oyu have your overall K/D which keeps on counting and then a manual K/D ratio which you can reset to 0/0 at anytime and it then starts counting again from scratch. That way you keep track of your progress overall and you can yourself define milestones at which you want to get a new K/D count going for whatever reason.
Also that press M shit annoyes the hell out of me, as it is now. Often if there would have been a reason to report the one due, another already hit you again and you would report the second one and therefor you dont report anyone at all.
I still want to see a "Hall of Shame", doesnt need to have any consequences to land in that list, but people care about their reputation, add then a link from your cRPG character desription also to the Hall of Shame and perhaps from your Strategus application for a battle ... people just may care then about trying to hit less random. Then again the avverage Ping may be included soemwhat into that list so that also can see who may have to fight not only the enemy but is own limitations concerning network speed.