I can see that useful when your overall resistance is wrong.
ie a 29 to 91 resistance vs the 10-80 you need. mismatched sending unit to gauge.
but the issue I keep seeing is that it doesn't read right through part of the travel. As mentioned above. It reads full. but doesn't transition correctly and suddenly you are at half a tank. and it suddenly goes to empty. I don't see this helping with that, as it would be a variable resistance problem though the travel.