Loved to play it and it makes a great starting point
While I understand some people frustration from the fact that Minetest Game is monotous, it serves a pourpose indeed: it is that it is more of exploration, construction and a peacefull mode of gameplay rather than the actual survival one.
Rebranding as Minetest Creative could eventually fix it. The fact that it lacks the survival experience indeed pushes away a lot of people, but this is trivially fixed by browsing Content DB. Perhaps some invite to do so at the home page of the menu could be more interesting so the popularity ranks by Content DB could fix the push-back somehwat easily.
It does also serves as a base to invite you to mod it. To me the fact it lacks stuff made me into the whole modding part so it is a good thing from that perspective.
Overall, I like the concept, idea and implementation!