I'm still looking (Scribble seems anything but lightweight!). Perlpod probably looks perfect but I have to see more.
Is there a markup that can do numbered lists?
Regarding section titles, I think the theory is it makes it easier to stick new header levels into a document.
(For those who aren't familiar with RST: If it sees underlines like ====, ----, ^^^^ or ~~~~~, it decides what the header levels are based on the order in which it sees them.)
In practice, it means a typo makes it completely ignore your header, you have to learn a set of acceptable characters for headers, and there's no way to start a document with anything less than shouty H1.
Nice idea, though.
> Is there a markup that can do numbered lists?
Correctly and usably? NOPE.
1. first item
2. second
3. and so on
Markdown does parse that, but it seems superfluous to me tbh.