dark knights should get a katana or sephiroth's sword

[KoroushSensei]

it is a two hand sword and right now most look like a giant triangle

[AnaviAnael]

Or they could give katanas to Samurai.

[MomomiMomi]

Please no. Just give Samurai.

[Dualblade]

Dark Knights get a good bit of influence from Cloud and Guts, and katanas aren't the first to come to mind for them.

They ARE, however, for the Samurai job. Which most likely will come out next expansion.

[MilesSaintboroguh]

Dark Knights use greatswords. Katanas are a completely different weapon, so no.

[Maaizr]

Absolutely not

[AriaEnia]

Probably a big katana like the one this guy uses

[MagiusNecros]

Dark Knights get a good bit of influence from Cloud and Guts

Dark Knight has little to do with Guts outside of the Darkside of the WoL being similar to the Hellhound.

[AstralKaos]

Samurai should get a katana.

Dark should get slabs of metal fashioned into a sharp, or in some cases blunt object called a greatsword.

Sephiroth should get a haircut.

[CoolCat]

The closest DRK can get to a katana is the law weapon.