Hmm, so let's say I have this:

If I go to "Nicolas' note", I could see all tasks where I tagged Nicolas?

Yes if p.e. a Person is involved in different Projects and tasks and if i have a Meeting with this Person i can easily See in nicolas‘ Note what i have to Discuss with him. Would be nice to have this in a colored box. And if i have a Meeting with another Person i Go to the other Persons Note and See again all the related tasks and Notes :)).

and while working on sth. I will just have to link inline in a task to the Person, and will be Reminded to Talk about the Right Stuff with the Right Person automatically