I think that of course most people here would be generally interested in reading such content, and if you can make a compelling case that there is a niche or in

I think that of course most people here would be generally interested in reading such content, and if you can make a compelling case that there is a niche or intersection of interests that isn't well represented at a level of depth/complexity, then you have an interesting proposal. However, you are describing two very different things. With a blog, one simply begins to write blog posts. There is no other approach to take, as you must before anything else establish your credibility as a writer within a domain of knowledge. A news site is a far different proposal. Before you put a lot of effort into it, you need to figure out what might be crassly termed a 'business model', which in more general terms is simply, "here is my vision: what work is required to make it a reality; how will that work be done; who will do that work; why will they chose to do that work; how do I expect to benefit from this; do I still like what I am envisioning." I think there's still lots to be dissatisfied with in the current landscape of content providers and aggregators. For instance, a lot of nominal 'content providers' bulk up their content flow with hasty recapitulations of content elsewhere; that this activity avails them at all is, I believe, in particular, indicative of an unfilled niche in content aggregation. One frequently sees, out in the boonies of the not-directly-for-profit internet, knowledgable and useful summaries and introductions of content hosted elsewhere. Fleshed out more thoroughly with a contextualization of what something means, how and why it matters, and what it should lead the reader to anticipate, such material could facilitate reader access to expert opinion and information that would otherwise be beyond them. As another example, editorial oversight, in particular, is in a state of near-crisis, everywhere. This is crucial, as it is the lynchpin of journalism. A different model of quality assurance would be transformative.