[Manuel_D]

Shallower discharge means reduced range. Or more batteries, but that increases mass of the vehicle which in turn increases energy consumption. Customers are going to see a car with substantially less range, or a much more expensive car with less usable space and heavier weight. And it might not even be able to reach the advertised mileage if the customer is in a hot climate.

Easily replaceable batteries is probably a better bet for preserving the retail value of electric cars. Purchases are probably going to be made assuming that the battery pack is worn, and can be replaced with a new battery pack which ideally makes use of more recent battery tech.

[WorldMaker]

In practice, reduced range hasn't been a problem in the Used Car market to date. Outside of some well known issues with especially early model Nissan Leafs, the majority of EVs that have entered the used market have not seen dramatic reductions in range in their expected lifetimes. (If anything the used market is seeing the opposite problem: batteries are generally exceeding their expected lifetimes and in part because of that EVs are staying in the hands of first owners for far longer than comparable ICE models.)

Reduced range is far more a "PR problem" than a "real problem". For the most part, people extrapolate from the problems they have with battery life in smartphones, which are constrained by size and thermal management in ways a car isn't, and assuming it is a problem where it isn't one in practice.