If Liberator is for Dragoon, does that say something about the future of Dark Knight?

[Mazi]

Snip

http://finalfantasy.wikia.com/wiki/Dark_Knight

XI is the only game where they use a Scythe, almost every other one is a sword.

And random but somewhat accurate comparison: Jedi uses a Lightsaber (Paladin uses a sword) Sith/Dark Side Jedi uses a red Lightsaber (Dark Knight uses Dark/Evil Sword)