Don't know if it can be done, but can MWSE be used to add items to the inventory of an existing merchant NPC?
Specifically, I would like an MWSE mod that will add at least one each of unenchanted exquisite ring, amulet and belt in the game including those added by mods. The clothier merchant NPC Milie Hastien in Balmora makes the most sense to me because she already carries a few such items and because Balmora is the HQ for Hlaalu who would probably have the gold and interest in luxury jewelry. It would be nice if those items would re-stock periodically.
Like I say, I don't know if MWSE can do that and it's outside my skills which is why I'm requesting such a mod. Another reason is simply that, if it can be done, it saves an .esp slot.