defstructs and packages

Why CL includes two non-orthogonal concepts for code organization? Why to define an IMAGE package I have to separately declare (defstruct image-state ...)?

Can we replace defstructs with packages in future Lisps?

>>5
You don't understand CLOS. It's purpose is OOP-modelling, not code managing. Packages, on the other hand, is a way to break big project into orthogonal pieces or combine orthogonal pieces into a big project.