The worst of the changes is the following (Hertz started it first).
If you do not accept LDW, or if the car is lost or damaged as a direct or indirect result of a violation of paragraph 9, you are responsible and will pay us for all loss of or damage to the car regardless of cause, or who, or what caused it. If the car is damaged, you will pay our estimated repair cost, or if, in our sole discretion, we determine to sell the car in its damaged condition, you will pay the difference between the car’s retail fair market value before it was damaged and the sale proceeds, except in New York, Illinois and Canada. In New York and Illinois you will pay the lesser of the difference between the car’s retail fair market value before it was damaged and the sale proceeds, or our estimated repair cost.
Note that most insurances (other than their LDW) will not cover the above if they arbitrarily decide to "sell" the car instead of repairing it for whatever ridiculous price they want to regardless of the extent of the damage. Most likely this will not stand in court but you will have to go to court and fight it out. NY and IL have better attorney generals that are consumer friendly.
This is just a way to scare the people into buying their LDW.
But one could get into a significant financial burden, if for example, your parked car was damaged by a hit and run. It is much easier for Avis to wholesale it at a cheap price than to go through the process of getting it repaired.
I don't like it a bit.