But then, what hammers do people really use other than Crom or Axes other than AoE at high-levels. I'd say that the Short Sword of the Mask +5 is a fine enough weapon for a character that is best suited for ranged combat anyway.
Why is Mazzy best suited for ranged combat? She has the stats and potential to excel as both ranged and melee attacker, so why not make the most of it. She might, at the beginning of the game be better suited to sniping, but by the end, and certainly during ToB, she will certainly be the equal of any of the other tanks (surpassing a few), and will be more beneficial engaging in melee.
You are right of course, most players do only make use of one particular weapon at higher levels, I suppose its just that given the choices available to Mazzy, grand-mastery in any style of weapon, I don't see the Short Sword of Mask as being that great to aspire to.
Out of curiosity would you be recommending the Short Sword of Mask to Minsc, Sarevok, Keldorn, Korgan or a custom made fighter?
I guess just from a role-playing aspect I tend to like the versatility over the pure power, and think it's generally fun to have the power level scale upwards over the course of the game rather than, say, getting Celestial Fury and FoA early in Chapter 2 and never dropping them.
Personally I prefer weapons that kill enemies in the quickest time.
I find short swords less appealing because, IMHO, to make the most of them you have to remember to make use of their special abilities, which in the heat of batte is quite easy to forget to do (especially when you've forget to change from the default script and Jan wonders off to engage a pack of vampires single-handedly).
As for your comment about items gradually increasing in power, I agree totally, that's why I like halberds, they gradually increase in power throughout the game many of the more powerful versions are not available until The Underdark (or later).
I'd forgotten about that one: never used it. According to the readme, there are at least 2 new short swords, though the way one is described, Lolth's Cruel Sting, does not lead me initially to think it's going to do magical damage right up there with things called XYZ of Fiery Blight, or Flaming Burst XYZ of Disruption.
If I remember correctly it adds items from the Icewind Dale games. Lolth's Cruel Sting is from IWD2 (Hof mode)it grants immunity to Web and some % of poisoning and webbing a target.