I learned a lesson about fret height a few months ago.
I have an old 1970 Regent Les paul custom copy that i played for years but the frets got badly worn from bending strings. So i decided to sand down the frets with 20" of sandpaper glued to a straight piece of aluminum. I guess i took all the frets down close to 0.010" to get all the low spots out.
But playing it it seemed different.. my fingers would slip over the strings when doing bends and vibrato.
Now i realize that you need higher frets on a blues or rock guitar or the strings slip under your fingers.
Larry K