If running your tank low (or even empty) killed your fuel pump I would be replacing them by the bushel basket. I have never seen any technical material from eiher the manufacture of the car or the manufacture of the pump confirming what you say about fuel pumps.
Think of what you are saying, you are saying the last 1/4 of the tank is unusable or usable only at the risk of pump damage. Look around for something from a pump manufacture or a auto manufacture that puts out something about this subject (even if it is biased) Lets look the info over.