KDA Ratio Calculations Should Change

Currently KDA Ratio = (Kills + Assist) / Death

10 min into game: Person A: 0/1/0 and 100 cs, KDA Ratio of 0 Person B: 0/11/1 and 50 cs, KDA ratio of 0.09.

Not much difference but still seems odd that a feeder could somehow end up better KDA than say a top that hasn't had kill opportunity yet but is doing well in farm and winning their lane.

I propose a system that takes cs into account and maybe uses different math.

If, for example, Kill = 1 / Death = -1 / Assist = 1 / 20 CS = 1 & New KDA = (Kills+Assist+CS) - Deaths

Person A: 0/1/0 with 100 cs, KDA of 4 Person B: 0/11/1 with 50 cs, KDA of -8

Maybe the numbers need to be tweaked a bit, but I think something closer to the second method more accurately represents the player on the team and how they are performing at the time.

Any thoughts?