Heres just a little something I did for fun, though I do think it could have some application if it was ever implemented.

http://dl.dropbox.com/u/16026083/Antigua%20Upgrade.png

Now Ive noticed many of the older weapon families lately have been getting some updates with some new upgrade paths, so I figured hey why not one for the most popular gun series in the game, and this would be a direct upgrade path of the Antigua itself rather then a side path.

Now it may seem a little more powerful then the average Kozuma/Vendor/Recipe item, but lets admit it, its a boss token related item. Boss items are slightly better then most norms anyway =P

Its also in a sense a Magnus made for us gunslingers who want to remain actually mobile, admittedly its damage output would be a little lower in comparison, but it would be worth it for the ability to remain mobile and actually dodge projectiles =P

Also as a little nitpick I did these designs cause I cant stand the damn ornate eagle wings the Silversix and Sentenza path has, far too "Final Fantasy" IMO, this is for the people who just want a manly hand cannon minus the kiddy accessories =P

Its stats aren't set in stone, though the passive stun chance would need to stay, the damage stats I did there was simpily the split Elemental/Piercing the Silversixe/Sentenza do combined into solid piercing, so in theory the damage output would be about the same.

Remember this is just for fun, but feel free to give ideas or input.