I don't see any reasonable way around this, though. If I have a car that I could replace for $8K plus the cost of replicating some mods [CarPlay head unit, tow hitch, and heated seats] and would salvage for $1K, I can't reasonably expect someone else's insurance company to pay $12.5K in costs (for repairs plus rentals/loss of use plus diminished value plus incidentals) to put me back in a place where I then have a crash-repaired car worth $7K plus $1K in cash in my pocket for diminished value. What other carbon reduction could be bought for that extra $3K in costs vs. repairing our damaged car?
From the at-fault driver's and their insurance company's point of view: the driver's negligence caused around $8-9K of direct damages to me plus several hundred in incidental/related expenses. That's what the driver is liable for (and the insurance company on the hook to cover as per their agreement), not a $12+K figure for a liability for damages amount that was thousands lower.