I personally don't want to see anything to do with KDR in this game at least for the foreseeable future. Too many unfair things happen like spawning in and dying from a grenade, getting stuck and having to suicide, players spawning behind you and shotgunning you etc.
I really like how it's based on style and deaths don't really matter, it's easier to shrug off and enjoy the game.
The leaderboards are great, it was nice to get some recognition and be at the top of the daily and weekly boards except I don't like how they just reset to 0. It should be based on the last 7 days rather than simply resetting on Mondays.
I support any additions to it since it feels like it gives style points more meaning.
As a side suggestion I'd like to see style points from the current game restored if you rejoin, sometimes I crash (a lot) or lag out.