CORS was "cors"ing some issues (heh).
But also it is easier to maintain this way. Development was made much more difficult when I separated it. Combining it all also improves SEO
I'd ideally like to keep the blog. subdomain the same, and while there are a few ways to achieve this it is much simpler to just dedicate a separate application for the subdomain.
This change also adjusts the webhost builder extensions to default to ports 443/80, and each app now explicitly sets the port it needs.
Oliver Booth