Fuel pumps mounted inside fuel tanks whether it be passenger autos or MH get cooling from the fact that they are submerged in a fluid. IF you are a half tank kind of person since the increase in fuel then you are increasing the risk of premature failure. The only in tank fuel pump I ever replaced was in the 250K mile range on a K-5 Blazer. I know this, certain parts should be OEM and that's one of them. So with that being said my belief is that changing your pump for the sake of having a new one isn't something I would do.
On different passenger vehicles that have had fuel pump failures and that have easy access to the fuel tank in the rear, a tapping on the fuel tank while someone attempts to start the vehicle will SOMETIMES give you one more start up however do not turn it off until you reach your destination. I don't know why this works but it has for us. A good 2x4 and a nice vibration on the tank seems to help.
Now if you have zero mechanical ability or zero common sense do not attempt anything that I ever say or do. I will get nailed by the scaredy cat police for encouraging people to lay under a car or hit a fuel tank with gas in it. As my dear wife often remarks,"what do you know" and I agree with her, bless her heart.....