There we go, Junior is available in most countries as of today. I am excited to see pictures of the actual card soon, the rendering on the website is weird.
I would say the feature set is already slightly more than a MVP, but one thing would hold me back as a parent: currently, a kid’s account is tied to one parent. But there should be an option for both (or even three ) parents to have control.
(Okay, three parents really is an edge case. So just ignore that. But it would be cool.)