#1

Roam Research allows document titles to have formatted links in them, and I often want the same thing. I find myself replicating the title in the document itself just so I can have a link. For example:

Doc about Trees.md

# Doc about [[Trees]]
lorem ipsum...

Ideally I wouldn’t have to do that and the link to Trees could be put in the document title itself.

#2

The document title is the filename, so this is tricky. Hard to do without giving up on the core principle that your notes are local files.

Take a look at Use H1 or front-matter title instead of or in addition to filename as display name.

#3

It is perfectly do-able.

For example:
The title “Doc about [[Trees]]” could be simply be “Doc about Trees.md” and you could keep a mapping of filename to title somewhere in the system. If you don’t want to keep a mapping, you can choose a new character that is more compatible: “Doc about __Trees__.md” and caution users that double-underscores in filenames will be treated this way.

You can also find a way to leave them alone. On linux, this is possible. I just tested making new files with these characters ( [[ ]] and #) in the filename.

#4

The characters are allowable in file names in Windows.