I certainly agree with the philosophy of don’t fix what isn’t broke. When I first decided to get serious about sharpening I bought the LV grinding jig and a white Norton grinding wheel. I also got a hard felt wheel and the green honing compound. All of those were good choices. The grinding jig re establishes the correct angles and a hollow grind that lasts for quite a few hand sharpenings and honings and the felt wheel starts a mirror finish on the edge. If you can easily shave hair off your arm then I’m happy with that. I don’t need more sharpening equipment than what I have.
Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.