For me, the suggested links feature should not be automatic. It would be to resources consuming. But it could a kind of data analysis that we start from time to time, or just after creating a lot of thoughts.
How the suggestions links could be created? I do not know, it is a little far away from my actual job. But I think we could go beyond searching for identical words in thoughts and attachments. Looking for meaning. A simple version of that would search words (like for example the word “rule”), derivations of forms (like, for “rule”, “rules” and “ruled”) and families of words (the word “rules” can be related to “policy”), kind of synonym search or even domain search.
It would add an extraordinary value to TheBrain if we could analyze our data and discover relations that we did not think of.