I guess you are implying that these smaller (unseen) hangars could be used to store these containers that fit into the Enterprise
. That works for me, although your initial idea would have been more elegant
Another thought on the container idea: each type of starship would need its own type of container. For example, the containers that fit into the secondary hull of the Enterprise
wouldn´t fit into a TOS Miranda
type ship. Depending on the actual number of starship classes in TOS, there might be quite a few different types of containers a station like K-7 might have to have in store. So a standardized container (shape) might make more sense. Or you say, that these containers are merely limited to the top-of-the-line starships, which need to exchange cargo quickly and be on their way again.
But that should maybe be discussed in a thread of its own - along with the actual meaning of all
the hull markings on the Enterprise