I understand that, but are there opportunities to improve upon the "fun" of Minecraft that lead to an actually useful product? I'm sure the main motivation for building a calculator was the complexity of the problem -- not the usefulness of a Minecraft calculator. Imagine if the tools were tailored to keep the same level of fun while also empowering him to create something he could use!
That's what I meant by "think bigger" or "serious" -- the Minecraft calculator was fun and challenging, but is there something equally fun, equally challenging, but more useful? Can we make tools that empower kids to have more fun solving complex problems that lead to a useful result?