The primary argument against the 10% loss when selling a module was that it would punish experimentation and adjusting your loadout to various situations. With module storage and delivery in 2.2, this will become a moot point - not only can you keep your (potentially modified) modules, you can also have them delivered to you even when you are in some backwater system that does not sell that type of module. I think it is only fair then that the 10% loss is reinstated in 2.2.