/run SetCVar(“nameplateVerticalScale”, 2.7) is what enables large nameplates.
Vertical scale 1.0 = Small nameplates.
Vertical scale 2.7 = Large nameplates.
This is the CVar that determines whether ‘Larger Nameplates’ are active or not. (Although at the moment the blizz settings ui is broken and will show larger nameplates enabled if the cvar is not 2.7, regardless of value)