There has always been talk of implementing new ideas to improve things but nothing seems to ever happen.

Pod index rates judges performance & consistency but is relatively unknown.
Judges having access to monitors to refer to has also been mentioned.
Using noise reducing head phones to stop distraction & crowd influence.
The use of instant replay to review and make a call.
Anyone heard of Punchforce?
There are many others. Unfortunately there is no one overall fix but some of these combined can help to improve.