Howdy!
Although I did respond to your comment yesterday, I notice that there are several deleted replies beneath it, so I may have missed some context there.
To answer your question, implementing large body-type differences comes with a lot of challenges regarding artwork and scene variations. For the same reason that things like weight-gain or extreme hyper-endowment are limited to select areas where the content can be more easily managed, if player-as-shortstack content appears in the future, it will likely be a dedicated area or event. It's not as easy as scaling down certain pieces of artwork, because there would be substantial overhead for things like multi-character artwork, or artwork where objects and scale matter. Even just from a text-based perspective, it would require a significant number of new scenes to be written, and that's the easiest part.
A micro/macro/size-change-y planet is planned in the future, and I have a few notes to add player-as-shortstack stuff related to the Fennex Flotilla already, so although it won't be a game-persistent thing, the kind of content you're describing will probably appear at some point.
Cheers.