every expression is a full custom head morph. ie: a smile will be a complete custom head remorph for a smile. a pucker or snarl will be a complete custom head remorph for that expression.

as to how they all combine with the existing Alyson smile morphs, with other facial morphs, with 3rd party morphs, with Bob from next door's morphs, etc - thats going to have to be for people to experiment with themselves.

right now all i care about is when you turn the GNDA_OpenSmile morph up, you get a quality, custom open smile. when you turn the GNDA_Pucker or GNDA_SlySmile morph up, you get quality facial expressions, etc.
theres just too much crap out there for me to guarantee that it all works together properly. and this isnt exclusive to Alyson: ive been at this for a decade and i still cant get a genuine, quality mouth open/open smile morph from Vicky that doesnt look Fd up unless i take her head into Zbrush or get to work on it with the morph tool.

regarding the blinking: you can blink the eyes independantly anytime. the eyes are crinkled, its just that the lighting in this particular render obscures it. incidentally, when i smile like that, the corners of my eyes crinkle due to the contraction of the facial muscles but my eyes do not close even 1mm. when you squint the eyes in addition to the smile things start to look feral.