multiple addresses, emails, phone numbers and companies assigned to a customer
I'm looking for a possibility to add multiple emails, phone numbers and addresses to one customer/company. I know it is possible by adding another contact in a 'contact' tab, but - honestly - I'd prefer not to, as it creates another contacts in the customer views (which becomes overwhelming eventually). Ideally, the customer view should have a button to add another address/phone/email and store that data in the database. Also, I'd love to assign one persona-partner to multiple company-partner, hence create many2many relationship in res.partner's parent_id. Now it's only a one-way ticket.
I am wondering here if such a module(s) giving these abilities is somewhere around (I had no luck trying to find one... :( ). If not, I imagine that can be achieved by altering the res.parner's table structure. Adding additional fields, like x_phone2, x_email2 etc. seems to be the easiest solution, but I don't know how much e.g. emails I will have to store in the db. Hence my another question: what would be a rule of thumb to transfer the given fields into the arrays, resize them, and accessing if needed? :)
I can provide you with more details if something is unclear or too blurry. ^^