A write.as blog.
Well, this is a start. I've always had a blog on my own domain and while it works, it's just not up to snuff on what I need: the convenience of writing and publishing posts and an easy way to maintain them.
I've underestimated these two points because even though that blog is running on your typical generated static-site running off S3 (it's running on Jekyll), seeing the results immediately and being able to shuffle things around outside of a terminal or a file browser actually means a huge difference between “I want to write a post” versus “I want to write a post and publish it”.
So maybe write.as can solve those problems.