For very large organizations it would be helpful to have fields like "department" or "mail code". For address to work with AddressAccelerator and AddressFinder they need to be limited to 2 lines and a certain number of characters per line (50 for line 1 and 30 for line 2, I believe). And the department is for contacts, not the whole company, so I don't feel like it belongs in the address lines. Currently, we have re-purposed another field, but this is not a perfect solution.
This would solve a frustrating dilemma - currently you need to put Department in delivery address OR create a new Cn record for each department in an organization, neither of which is ideal.
I also need this so that I can query by department with some consistency. WIthin my organization I often need to know who is in the fundraising department and hate having to use an attribute when it should be a part of the address field that is queryable.