I am sure you mean 'unfeatured' not unpublished. It is published as readily seen the link works. Featured means it is available to Google. If 'unfeatured' it is not available to Google. The article still can be shared through social media - Facebook, Twitter, Pinterest & etc.
You will get a better response from some at the forums posting your question asking for feedback. Post it under the category HubPages Community → Improving Your Hub.
The model Hub is called a Stellar Hub. Here is a link to that at the Learning Center: https://hubpageshelp.com/content/Learning-Center-E...
Here is the Link to the Learning Center → Content Creation: https://hubpageshelp.com/content/
Another hint is to know how the Quality Assessment ranking is done. Here is a link to the rating table for an information Hub: https://hubpages.com/help/hub_hop_table#informatio...
The QAP is done through a human outsource called Amazon MTurk. They are actual readers reading the Hub rating the Hub. They use that table as a guideline. What I do is I use my Hub Score as a guide. In other words if I got 74 then I look at Hub Rating 6 & 8. I don't know what rating is needed for featured. But, the goal for a Niche Site is eight.
I hope that helps . . .