Scrubby zoom sensitivity option in the preferences

[Intuos5]

I do a lot of work where I need to zoom in and out by quite a lot. For me, the scrubby zoom together with my pen tablet is just not sensitive enough and I need to make really large gestures. Instead, I would like it to be more sensitive, so that I can more comfortably zoom in and out in a single gesture instead of multiple large gestures.

Here's a comparison with Illustrator's zoom speed, which I find preferable. So I am proposing to add a Zoom-speed option under the Preferences > Tools so users can set their preference and/ or change it on a per-project base if the need arises.