So I was reading about oil mods and thought "Oiling mods may help but by far the best way to prevent oil related engine failure is to keep up the oil pressure".

Given that the oil pump housing is cast aluminum, it is no wonder the oil pump wears and drops oil pressure over time. But I thought of a way to try and reduce oil pump wear. I know that you can put in the steel mid plate and that does help. But what about pressing/casting in a steel sleeve into the housing around the oil pump gears? That would provide a harder surface around the oil pump gears to reduce wear and premature failure.

How practical would this be?