This is just a useless suggestion. One can look at their kills via /stats easily. They not just even able to look at their own kills and other stats but also other's kills,how much kills another players have.
This looks like a suggestion made just to get some forum stats aka forum post farming. Also I am surprised to see that even many well known players plotted positive for it. Developers have many suggestions at their waiting list which actually sounds interesting and will make players to come online and check those updates out. This is just a suggestion that can easily be missed by newbies or players who didn't looked at their updates. Think of these community and not just farming post by giving some useless suggestions. I won't vote anything