1. Linking one contact person to multiple companies.
  2. Linking one deal to multiple companies.
  3. Contact person's role listed after their name on the company overview page ("Sam Smith, CEO" instead of just "Sam Smith").  I would prefer phone number and email to show directly as well without having to open contact details every time to see them. Unnecessary clicks 
     

And thank you, Pipedrive is hands down the best CRM I've ever used.