Gerne 
Really very nice of you! I’ve only just released PinchBar, so I don’t have a donation account for supporters of my open source efforts yet. Right now the only thing I can link to here is my band’s merch. We offer our albums digitally for less than 10€. With this you can support me effectively and maybe it even suits your taste in music 
Do mean something like CMD/ALT + Scroll to zoom vertically? I don’t know Logic’s or Studio One’s workflow. CMD + Scroll is Cubase’s default behaviour to zoom horizontally, so I’m a bit confused (not really by you rather than by not knowing other DAWs’ conventions…).
With PinchBar you can hold down CMD or ALT while pinching for vertical or waveform zoom as suggested in this feature-request. All modifier modes and their sensitivities are customizable via Terminal, but I haven’t documented that yet.
If your aim is to remap Scrolling behaviour of Cubase: I’m currently working on this open feature request for a completely different use case where somebody asked me if it was possible to add a preset to PinchBar that inverts its current program logic. He wants PinchBar to map scrolling (+ modifier) to pinch gesture. His goal is to trigger Apple’s standard continuous trackpad zoom (e.g. in Safari or whatever) but using a Magic Mouse. I can certainly do so and already have a working prototype running on my MacBook. The tricky part is to make PinchBar flexibel enough so that the user can choose between all kinds of possible usecases.
ATM I don’t have time to write a full featured GUI. But I can add presets and documentation, how to configure these via Terminal. So if you have a feature request for something that’s not yet possible with PinchBar, I suggest creating an issues on PinchBar’s github page like the one I linked above. I will definitely read and answer them and investigate how much effort is needed to implement.