Perfect intonation is not possible. Matching up the 12th fret note to open note is not "perfect intonation". Intonating fretted instrument is a compromise at best.
I think we are all quite aware of this.
But some tunings/ string gage choices require a bridge capable of adjustment per string to obtain a more pleasing result above the 12th fret. I love my NS eub, it's fretless so not a concern.
But the radius wouldn't work for my needs. Sorry I opened such a can of worms.