So now I've seen a horizontal zoom scroll wheel. I see now, that is a lot harder than it seems lol. Since LPX has way more options when it comes to customizing workflows, I 'kinda' decided I should just make LPX match the scrolling/zooming behavior in Ableton so that I only have to get used to one DAW, if that makes sense. I've scoured the internet for various solutions and have even considered writing my own coding scripts to get around the limitations, albeit that's a whole-nother thing entirely. Right now, I'm trying to get better at Ableton Live Suite, and if I'm being honest, their navigation options suck complete total ass. What's great about Logic is that it utilizes side scrolling really well (my DAW of choice), not to mention its scaling abilities when it zooms in and out is excellent. Before that, I used a trackpad (before I had my Mac Pro), which allowed me really easing scaling with zooming. They're similar: a well positioned thumb scroll wheel. It's probably the best mouse I've ever used, at least for audio production. If interested, you could mention the device specifically. I don't have a physically horizontal scroll wheel (perpendicular to the finger) - I may have never seen one, actually - so I'm not sure what you're facing.

Yes, there are similar key commands using the arrow keys plus a modifier, but if they're deleted, the mouse wheel behavior is the same - hence 'hard-wired.' Option Scroll for a horizontal zoom and Option Command Scroll for a vertical zoom are hard-wired functions in Logic. If I assign another thumb button in Steermouse to option + command and scroll the wheel, I get a horizontal zoom - again, just like holding those modifiers on a keyboard.

That said, when I assign a thumb button to option in Steermouse and scroll the wheel, I get a horizontal zoom - it's the same as holding down the option key on a keyboard. And I do understand trying to consolidate interface behaviors between programs. I've fallen down many a rabbit hole trying to make things like this work. If you don't want to pursue it, I'll understand.

Mouse wheel zooms instead of scrolls