I have une question;
Why have you chosen 'Artes' over 'Calibur'?
I was gonna go with Calibur out of originality and Destiny doesn't really have an 'Arte' like system.
Plus before a 'Blast Calibur' is activated you see "Dillusion Blast Calibur" or something written across the screen.
Well, I've always been up for colorful and liberal takes on different terms. But I'm also one of those who wont fix something that's not broken. Anyway, about the Caliber thing; I, of course, would've loved to see Calibur (Namco's own awesome misspelling). But if I've understood things right, the Disillusion Blast Caliber is tied to a Blast Gauge(?). Thus making "Blast" the keyword, unless you'd read it as "A caliber w/a blast."
Also, the reason for Artes being the current translation is more or less sealed by Radiant Mythology and Dawn of the New World.
Tales of Destiny PSX used Spells (and skills)
Tales of Eternia used Craymel Artes (and skills)
Tales of Symphonia called them Techs (and EX skills?)
Tales of Legendia had Eres
Tales of the Abyss went with a resurrection of Eternia's Artes term (and AD Skills) <- Actually, I guess it was Fonic Artes.
Radiant Mythology had Artes
Tales of Phantasia GBA had just Skills (I think)
Tales of Vesperia returned to Artes (and Skills)
Dawn of the New World has Artes (and Skills)
The things worth pointing out is:
ToD PSX is an old game which uses a 12 year old glossary.
ToP GBA wasn't Hometek, I think...
Radiant Mythology contains crossovers and uses Artes as the universal term.
Dawn of the New World is a ToP/ToS related title and used Artes instead of Techs/Skills.
So Artes is at least a safe common ground.
(Just like Techs and Skills, which are generic game terms for these kinds of things)
I'm not saying that Caliber is an impossibility, but there has to be some solid ground to stand on if that's the term to be used. And personally, I'd love to see it Calibur (from Namco's typo title Soul Calibur) instead of Caliber, if it was to be used, but that'd require some additional edits to the existing graphics and stuff while people are at it. But for now, I think it should just remain artes. (Maybe evt. a middleground with referring to them as Calibur/Caliber Artes? Going with Fonic, Craymel and then... Caliber.)
[not really an edit, as I saw it when I hit preview]
See that throughhim's chimed in on it too.