Wow! I think it would be easier to list the ways they haven't gone "beyond what is written".
Right off the top of my head:
Birthdays
Holidays
Smoking
Drugs
Limiting sexual intercourse positions within a heterosexual marriage.
Breaking up families
Hiding pedophiles
Commanding regualr attendance at Assemblies amnd "meetings".
"Field Service"
Keeping records of hours, magazines and books placed,. etc.
Blood transfusions (blood eating is unscriptural, but not transfusions, IMO)
Focus on works, not faith
Focus on external appearances, rather than the heart condition and fruitage of the spirit
Condemnation, or judging, of non-JWs as worthy of death.
Men with vasectomies can't be an MS or Elder (new one they came up with)
GB claims to be meditor, rather than Jesus
FDS lies
In short, they turn their opinions into rules, and DF or DA anyone who disgrees with their provably unscriptiural rules.