I doubt there's a point considering it'd be mostly, if not all, images of Ryuujou with breast envy.
breast envy or breast conscious, yes. It's a common enough meme, but it's easily tag-searchable and doesn't need a pool. It's like how we have a "shitty_admiral" tag for Akebono's secretary line, "pan-pa-ka-paaan!" for Atago, and "it's_ok_to_touch" and "burning_love_(phrase)" for Kongou, only in Ryuujou's case there were existing tags.
I think that a special tag is justified, since there are enough that aren't direct breast envy to warrant a different tag. I'm thinking mostly of things like post #1556496 or post #1556498 or post #1667470, where they are all other people deliberately trolling RJ for her flatness, rather than RJ having breast envy. (Breast_cruelty, maybe?)
Come to think of it, is Zuikaku the bustiest member of the Flightdeck Chest Club?
Hers weren't small. Her chest piece made it look that way.
WaiI'm the remodelled Light Aircraft Carrier from Submarines Tender Taigei, Ryuuhou!I-Is that so...?EhJust why?Pleased to meet you!I approve of you!Don't mind, Ryuujou-chan!Ryuujou-san...!?Eeh..
Compared to before the remodel, din't yer chest get bigger?Ah! <3Sure did...It sure did.yeah
Me too!