to both ideas : meh
i want weapon naming and flavor text ingame and already made a post for it, but i dont think you should get a killed by weapon, not even player if it can be avoided, i wouldnt mind something like ”killed by sword” or ”killed by poison arrow” but it would be way more interesting to be able to play an unknown assassin if you dont get your name revealed whenever you pvp kill
and the kill stat count is also kinda meh, you should have a stat page for kills in general but i dont think they should show on weapon since that would feel not lore friendly at all…
but just a matter of taste.