The rest I haven't looked at, but will have to add to my list, they fill a couple voids I've been feeling.
> I should roll my own blog static web site generator in Rust I suppose, because the existing ones are either slow or don't support what I need... So, not going to happen in the next year, most likely. :(
It isn't powerful enough to support what you need I'm sure, but I actually did something similar a little while ago.
http://a-shared-404.com/programs/
It's written in Rust, with dependencies on sh and markdown. I'm thinking about adding the ability to automatically execute an (optional) shell script in each directory, so that it would be easier to do things that markdown doesn't.
The code quality is atrocious (first Rust program of any size, and I'm not great at programming in the first place), but it may be useful. If you're interested in me adding that functionality, let me know, it may be the push I need to move it to the top of my pile.