I really like the feature for the iris to track your cursor movement, but it can't be used for certain Model with big pupils because the Eye Pupil will need to clip with Sclera. I think it would be great if we can add 'clip' layer feature to solve this creativity limitations
Can I suggest an idea that may or may not work (I haven't tested the iris tracking yet so forgive me if this doesn't work)? Try making the sclera completely transparent, then put white BEHIND the skin/body/etc to act as a sclera, then have the iris sandwiched between the white background and your model. It's not true clipping, but I think in theory it would work?