[stronglikedan]

I use word processors to specify complex systems. I can quickly navigate the document visually, without having to use Pandoc and its ilk to convert it to a format that's easy on the eyes. Other tools that live-preview markdown just aren't there yet. I also get a lot of automated functionality for complex structures like lists, tables, section numbering (in multiple formats) and tables-of-contents. I have really, really tried to be as efficient with Markdown and its ilk, but it doesn't even come close. I would also mention the interop benefit, but that would be beating a dead horse at this point.

[kqr]

I am also of the opinion that for anything remotely resembling complexity, Markdown is very lacking.

But the things you mention are the things I do with Org and Emacs Org mode. Is that something you have tried?