This has been hashed numerous times..but lets approach it differently. I'm fixing to refret my Loar for the first time in it's life. I've dressed the frets for years. It to me still plays fine. There is nothing buzzing or particularly out of whack with the frets..aside from the fact that there is nothing left and very little "fret feel". I'm sure I'll need to work with the nut height too.
What changes and/or improvements can I expect..Charlie..chime in