Haven't seen any copy Apple's trackpad size, unfortunately. They're copying the wrong things.
Does it turn you off because you feel that you would touch it whilst typing, or is it something else?
As long whatever I'm doing doesn't require precise movements, then a touchscreen is good enough, and easier to use. If it's something harder to touch with big fingers (say position in code), then I'd probably rather use arrow keys anyways.
To gi e you some context, I always traded touchpad surface for three physical buttons. They're very convenient when working in Linux. All I need from the touchpad is pointer movement and scrolling.