Talking of the design concerns that went into iPadOS’ cursor, I recommend studying Apple’s new HIG doc on the dynamic/adaptive pointer:

iPadOS 13.four introduces dynamic pointer results and behaviors that improve the expertise of utilizing a pointing gadget with iPad. As folks use a pointing gadget, iPadOS robotically adapts the pointer to the present context, offering wealthy visible suggestions and simply the fitting stage of precision wanted to reinforce productiveness and simplify widespread duties.

The iPadOS pointing system provides folks a further approach to work together with apps and content material — it doesn’t exchange contact. Some folks could proceed to make use of contact solely, whereas others could desire to make use of the pointer or a mixture of each. Let folks select how one can work together along with your app, and keep away from condensing your interface or making modifications that require them to make use of the pointer.

And this half on “pointer magnetism”:

Along with bringing focus to components by pointer transformations and content material results, iPadOS can even assist folks goal a component by making the factor seem to draw the pointer. Folks can expertise this magnetic impact once they transfer the pointer near a component and once they flick the pointer towards a component.

When folks transfer the pointer near a component, the system begins remodeling the pointer’s form as quickly because it reaches a component’s hit area. As a result of the hit area sometimes extends past a component’s seen boundaries, the pointer begins to remodel earlier than it seems to the touch the factor, creating the phantasm that the factor is pulling the pointer towards it.

Considerate, detailed learn (as standard per Apple’s HIG) with illustrations that assist get a way of what’s potential with pointer customization (it doesn’t seem like the Keynote replace with cursor help talked about within the doc is out but). Studying this, it’s clear that Apple didn’t merely carry the Mac’s cursor to the iPad – they began from the essential concept and redesigned it round a special platform.