Thanks for the reply. If there's a low-mid boost with short scales, would a short scale jazz be closer in tone to a normal precision in terms of punch? I heard a demo for a passive shortie jazz that sounded a bit more ballsy and focussed than a normal jazz. Not necessarily a precision tone as such, but it had a similar 'weight' to the notes as a P, it seemed to occupy a similar sonic space as a P, I was quite surprised by it.
It's also definitely the increased playability that i'm interested in. I'm 5 foot 6 and I've played normal basses for years, but I find myself staying away from the lower registers for fast sections / solos because that area is much more of a stretch, and regardless of the popular notion that it just takes more practice, I think if we want to get to a certain point in our playing ability, we have to take our physical limitations into consideration at some stage.
The only things that put me off shortscales up till now were that I was worried that I may give myself a handicap by losing the ability to play normal scale basses, and that by playing shortscales only you are very limited in terms of what basses are available. But then as someone who plays a p-bass 99.9% of the time this may not be a big issue..