Thanks for your interest @MooCloud
Our aim at the moment is to design the workflow to smartly integrate with the current developer experience (DX) of the Vue.js community, and enhance it with Pinegrow’s current DX (visual designing).
Once ready, we will actively engage the community and the add-on will evolve with you. With regards to your question - users will be able to design their components with live API data.
Ideally, we would have preferred “surprising” the community with this add-on when it’s ready. But, support for JS frameworks like Vue.js has been a frequent question here on this forum. So, the objective of my above post is to give a soft heads-up 
Our focus at the moment is to work towards our first milestone.