I'm just thinking of my Lineage 2 Bladedancer/specter.
Which would make the Job a melee Dancer i guess.
I think the name is cool, after all the names for classes and jobs in the game are more rooted on the cultural aspects that surround it than they are "titles" you have gained and own. Hunter is probably the "class/job" or Ranger that "best describes it".
But i bet there are gazillion NPCs that are either hunting or ranging through of all the game.
Having a Soul Crystal is NOT a common thing. In fact basically none of the Jobs is a common thing - Only named characters with special jobs or really strong related to our quest may even contemplate from afar what the WoL with a Soul Crystal is capable off: Why we don't really have mentors/masters anymore.
When a Soul Crystal chooses us, is because we are evidently to the the crystal itself that we are THE ONE that can dominate and explore all the knowledge engraved into stone.
Being a Viper is not a common thing, people might be part of their "guild" - Just think of Reaper or Sage or basically all Jobs.
The NPCs FIND you and inmidiatly think you are a better owner for the Soul Crystal.
People under the wrong impression that Ishgard be full of Dragoons or Dark Knights, Sharlayan full of Sages.
The whole monk Job is basically one dude, there must be a handful of Dragoons out there, and most Jobs are like this.
And is not the same to train and "be titled" a Samurai than to be the singular entity that is capable of extracting the most and explore the depths of the Samurai Soul Crystal - The guys of Kugane be looking at us doing Amakakeru Ryuu no Hiramekis all day long like wtf.
People focusing too much on the weapon and forgetting all about the Soul Crystal. Just saying, we are capable of what we are not because we are dextreous with all and any weapons: We download all that kung fu from the Soul Crystal.