Too much carbon and the rings might get sticky. From there it's downhill.
There's an old saying "if it ain't broke don't fix it".
I'm the world's worst about over doing stuff and I have to remember this all the time.
From Genesis: "And God promised men that good and obedient wives would be found in all corners of the earth."
Then He made the earth round...and He laughed and laughed and laughed!