This is basically Lilarcor but it's a variant for Morrowind, it talks a lot, it's bloody hilarious and since I once again took up poking Morrowind recently, I rediscovered it and the realization dawned on me that yes, I could turn this into a Warcraft Addon.
What I'm thinking is the Addon would do a few things, firstly it would only work when a double-handed sword is equipped. Secondly it would override the name of the sword and name it appropriately (this option could be toggled, of course).
Finally, it would add the random voices and stuff. These would be easy to do with Warcraft's events, I'd recommend trying it in Morrowind first though to find out which sounds happen where. There are a lot of random sounds that can be triggered off timers or random events, there are also combat sounds, levelling-up stuffs and a number of others.
There are also sounds for when Lilarcor evolves. These could be played when the player upgrades to a sword that's suitably more powerful than the sword they previously had (and won't play again until another such upgrade happens).
Even with all this, it'd still be a relatively simple and absolutely hilarious Addon to make. Of course, it'd be a good idea to make sure it can be toggled off because I can't imagine all people would be as patient or easily amused as I am and people might spend too much time laughing at Lilarcor instead of paying attention in an instance. And so on.
Anyway, there you go, idea of the day and all that.
It's a blast. I'm really tempted to make it myself but with my time constraints lately and my inability to test, I think I'd just botch it. It'd be so easy to do though, especially with things like Unit_Combat to help out.
I've never played Morrowind through without Lilarcor because it's so damned entertaining and it just adds a unique feel to the game to have a mindlessly nattering sword by one's side.
That and I never get tired of his half-drunk, passive singing. "lub lub lub ...makes th'worl' go roun'."
It'd be really funny to inflict that on the Warcraft community though. I do feel I should warn you however, Lilarcor is hilariously obnoxious and he has more of the gift of the gab than I do. It's just something you'll either find funny or you won't.
I....am not sure if I really understand what the bloody hell this is -never played Morrowind-, but if it is indeed quite simply an 'emoting weapon', please do! What gets to me sometimes is how 'dead' Azeroth is...99% of NPCs having nothing to say barring the same old line, and ALWAYS standing in the same damn place et cetera. This would, if ever so slightly, spice things up.
An emoting weapon is sort of what it is. However, instead of just using emotes, it actually uses sound files. So as you're wandering around, much like in Baldur's Gate or Morrowind, the sword actually just randomly mutters away to itself.
So in Morrowind, you'll be exploring the mountains near Vivec or something and suddenly ...
"You know, I did some killing with you and I did some, well, with others before you so it brings the thought to mind and I wonder, where does all this wildlife keep coming from? I kill and I kill and I kill but it just keeps coming back, a swords work is never done!"
... or one of the other many voice clips he has, that or he'll start singing or playing ...mood music. It's all very silly.