when we add new contacts we make separate contacts for people like families, friends, etc. I think it would be a great feature if there is a way to link two contacts together. ie: if we add contacts for a married couple, the contact info on husband (A) will contain a 'field' where it can show who he is associated with; In this case, it will show his wife's name (B) info. When we click his wife name, it will automatically open a page with his wife's info page.
I think this will be great in finding associations not only in companies, but network through families, business partners, etc. Plus making it easier to find will certainly an advantage for a Hubspot user.