Live2D is just incredibly hard to use and make it work with Nani.
I would be happy just some kind of simple GIF-like animation sequence capabilities, like being able to define few frames that could be activated with a command (or automatically) when dialog is being printed. That kind of animation could be used easily for other purposes as well.
This could be in the character panel, different versions of the avatar being simplest even though bit memory consuming.
I'm also open for super clear instructions and tutorials how to do that (speech / eye blinks) with Live2D, without NAY of that japanese or too complicated instructions in their "english version" of docs...