DropDown for ForeingKey

I think it would be a nice idea to have a DropDown for the foreing key properties on the user model.
For example DepartmentId

Any update on this? I've added a ClientID column to the AspNetUser table and need to retrieve data from another table to populate a dropdown control, which would edit and add client ID to the AspNetUser table.

I read on another thread that IdentityManager dont have support for this and maybe never have it, in my case i start writing my own manager, but another aproach if you can leave the user to select the field you can use postauthentication on userservice and return a custom view. the after you create the user you can use your own logic to fill the rest of the data.
More info here: #26