I'm still not understanding. How is it faster to export your save, load it into NHSE, generate however many items to your inventory, export that nhi, and import that into my save generator, than to just make the codes on my generator in the first place? You are, in my mind, asking for a lot of work for an odd fringe case that provides little to no benefit, in my mind.codes: can be enabled and turned off while in someones town locally, allowing easy item switching if you have multiple and much faster overall
save importing: have to import save, travel to town, drop items, leave, import save, reload game, visit town, drop them, etc
I also am not aware of any documentation (after some light googling) that indicates what the structure of the NHI format is, nor even that they are intending for that format to be used in this way. I'm assuming it's binary, which sounds totally not-fun to deal with importing in a web language. Is there an option to output into JSON or anything?