If an entity issues a DCMA take down notice that turns out to be erroneous, they should be charged a fine. That find should grow exponentially for each URL impacted by that erroneous take down (i.e. when they knock out 100 domains while trying to take out one)
In the UK we have a thing called Northampton bulk court. This is an automated court which is used to issue fines and summonses locally. people can actually integrate with it with their billing systems.
I've had three summonses for things that weren't valid/legitimate. Each one of these costs me literally a day to sort out.
The cost of each of these "misses" costs someone time and money. They should be fined for each invalid claim.