I would encourage you to read and contribute to this forum topic:
https://forum.inaturalist.org/t/adding-useful-id-info-to-taxon-pages/657
and also read
https://forum.inaturalist.org/t/proper-way-to-store-and-organize-hints-about-identification-of-taxa/8962
How would you propose that we “teach” iNaturalist which taxa or groups should display that banner? And who gets to make those decisions?