Ask HN: Market for a blogging/newsletter product?

Hey HN, I've spent years working on my personal blogging site. The blog is optimized for SEO and has automated Twitter/Facebook/email integrations so that you can just worry about writing those articles. Today it also includes a newsletter builder that's focused around sharing links to interesting stuff I find about a particular topic. The newsletter is then shared on a weekly basis. The system houses an invoicing feature as well, where you can quickly hash out an invoice for services rendered that need to get paid. These days the site generates a decent chunk of revenue, mostly from newsletter sponsorships, but also from on-site advertisement. I'm thinking of turning it into a product. It would work by hosting a simple page somewhere like superhost.com and then people can request instances of what used to be my personal blogging site. They then get lucas.superhost.com, or whatever subdomain they want. I could charge on a few different vectors, when they want a custom domain, or e.g a fixed monthly fee, or subscriber segments, a mix of the former, etc. I'm fundamentally interested to learn whether this is a product that could do well, or if you think it's too broad of a focus. I think today most products are hyperfocused and a "one-stop shop" for everything a freelancer or small company needs to market themselves can be valuable to non-technical and lazy people alike. Would love your insight