I prefer still images. Animations are usually just not that great in quality and take the devs a long time to create and render. I'd prefer that much more in plot and images than animation.
0.0001 Demo Prologe Tech Test is when the sky is the limit.
Really though I jump into the last page and see where the plot is at. A game like Wife and Mother you would think is well into the story based on the version and how long it's out but it isn't.
I never bother to check and even if I happen to see it gives the wrong impression. It's like when Dark Silver was still working on Glamour and every release had hundreds of renders and "dialogs" which were meaningless and boring.