@grnleaf Welcome to the iNat forums!
So I’m just trying to visualize what you have in mind here. We can already add multiple common names for any taxon on its taxon page. And when someone types a common name, all taxa that use that common name will show up in the pick list.
Are you looking for a way for these names to be more readily visible to the user for a taxon, without having to go look on the taxon page?
Or is it a place for the user to more readily add a common name for a taxon (maybe as they create an observation for it), without having to visit the taxon page?
Or something else I’m missing?