I speak from my own experience. I utilize Goodnotes on Android, but there are a few functions missing that would be highly beneficial, such as an autozoom feature. This would allow users to simply click on a number, similar to the 300% example in the picture, and then the zoom would increase to 300%. This would be an invaluable addition for writing, which would be the ideal use case. Such a function would not require significant development time, as it would only require a few lines of code.