Apart from ensuring my intonation was spot on, and my frets nicely shaped, scalloping my frets allowed me a lot of what may be the 'sweetness' you are after - a

Apart from ensuring my intonation was spot on, and my frets nicely shaped, scalloping my frets allowed me a lot of what may be the 'sweetness' you are after - a slightly harder pressure, without finger gymnastics, allows minor pitch corrections (but you can't go flatter). Regular guitars just seem dead to me. I also shaved parts of my neck - significantly - along different parts of it ie it's not 'smooth', it's shaped only for me, and how i want to play in the different registers.