On physically balancing the instrument on my shoulder:
First, let's remember that the lower half of the body of the Essence is a narrower Small Standard as on the Stanley Clarke basses, which are short scale.
When we reduce a neck to short scale we scale it. Reduce all neck proportions to 30.75/34 = 90% or so. So the part of the neck that sticks out from the body is reduced to 90% and the distance from body edge to the bridge is reduced to 90%. This keeps the fret at the body edge the same.
lidon2001, I guess in the end you're right. Even leaving the bridge where it is there's not significantly less neck weight and the upper horn could stay in the same place, or be just a wee bit shorter.
How does your bass balance?