Explain the problem as you see it
The power of Tana is in the networking of ideas and so I just think that there should be an easy way to link all unlinked mentions.
Why is this a problem for you?
Because when they are linked its easier to navigate between the words and thus follow a nonlinear train of thought.
Suggest a solution
Add a "Link all" for unlinked mentions
Also make graph view as many have asked, this enhances this networking of ideas further.