[Ziero]

Well, there's one character that shoots a hole in that theory - Verona. She was described as having the unique ability to communicate with the beastmen. Some beastment talk and some don't, but she knew how to speak thier own languages.
We have the Goblins and Qiqirin, the high-ranking beastmen, beastmen generals that speak, but not many others.
I guess it wouldn't have to be called Dancer, either, as Gambler is currently called Corsair... but its still Gambler >.>;

True, but there are still plenty of NPC beastmen we can converse with that have no rank. I always saw that as more of her willingness to listen as opposed to difficulty communicating. Most beastmen have examples through out their history of being able to peacefully interract with other races. Though most of that info would be found through offline stories and tales which may be difficult to dig up. But then again it could just be a plot hole created by oversight on SE's part.

I really don't see Dancer as the type to make peace with beastmen. That seems more like a Mediator's, from FFT, type of ability. As classically speaking, that was the job that soothed and converesed with enemy creatures. And any job that has it's best abilities focus on one group of monsters would be severely limited in effectiveness. If it were to be fully effective, it would need more abilities that could work on a wider range of enemies.

Someone on another topic here(I forgot the name atm but will go back and edit it in a bit later) thought up an idea for how dances should work that I found to be very effective and balanced. Similar to it's classic style, a Dancer's abilities would be mainly damage and debuff with some buffs and such for minor versitility.
When a dance was used, the dancer would keep doing that dance until manually stopped. As long as the dancer was dancing, the effect would still be active. But when you stopped dancing, the effect would slowly diminish over time. Meaning you'd have to constantly switch between certain dances to keep them up. This concept of how dances could work was not created by me.

Basically this is similar, yet different, to how Brds spells work. A Dancer could keep one dance constantly active or do numerous dances to juggle different effects. All the while they dance they can still melee, but have a slightly increased delay in synch with the dance. With their main focus on debuff and DDing, they'd be similar to Cor as a 'hybrid' job, good at two things without excelling in either. For weapons they could use Dagger type daggers, kunai and sai type katanas*again, this idea was suggested in the other topic. and maybe even a new JSE ring/fan type weapon, based on the ops suggestion of using chakrams as melee weapons, with low dmg low delay and it's own WS. Give it innate dual wield at 20 and DW 2 at 50 and it should become a rather decent DD while being a useful debuffer.