I'm going to go on a limb here, and I don't mean to be pushy, but flatly, I think you'll sell more through on the subscription side if you have good touchpad support.

I hate entering text without a keyboard. I have an iPad stand that allows me to collapse quickly between hands-on tablet and keyboard/touchpad in less than a second. I love the drawing aspects, and I don't mind doing certain 'quick' things in a hands on way, I totally see where its an advantage. However, if I'm input text beyond a few lines, its to the keyboard and trackpad. If I'm organizing a large volume of things, its keyboard and trackpad. Its just faster.

There is a reason that Apple gave in after all these years and added a touchpad.

What bugs me about this answer is you assume to know whats best for interacting with the device (not the app, which should follow device and platform norms)

to reiterate, following the customs of the platform will always be better than expecting users to break out of those customs. Yes, gestures and hands on interaction are a custom, but now we have customs around keyboard and trackpad too. They deserve equal weight and this really should be a priority. I'm really shocked you launched without this consideration. This tells me you don't understand the Pro market as well as you think you do, and for $100 USD a year, you should really be positioning yourself in a way that says "Pros, we understand you, and you need Pro tools. We see the iPad as a Pro tool. We see iPadOS as a tremendous platform for Pro Tools. So we made Muse, with first class and best in class support for iPadOS and its Pro features"

This doesn't say that to me. Feels like you didn't consider it. I am surprisingly passionate about this, so I apologize in advance if this is harsh.