I think that is a good call. I did like the blinking eyes. That was a pretty cool touch and unique.
About the branching paths, I have some concern about the card deck. If it is meant as a plot element that is one thing. But if the reader chooses which card that could lock you into doing a lot of renders per update. Especially if you add the advanced (below the line) options with different toys, positions for repeats, etc... If it is meant to be more or less just a plot element and say that "Today card 1 was drawn from the deck by Nara" then go into a fixed scene that follows a narration/story flow that would be something different. Then maybe give the option to choose a card more or less as a gallery option to replay a story scene or something for the reader.