The way that Dancer was implemented in FFXI would have been much more appropriate to this game than it was to that. Dancer was sort of a jack-of-all-trades, master of none in that it had some healing ability but not as strong as a dedicated healer, some dd ability but not as strong as a dedicated dd, some support but not as strong as a dedicated support, and some tanking ability but not as strong as a dedicated tank. This made it great for solo play, but it was very, very rare that it ever found a role in group play.

As a healer, Dancer did have the unique advantage as being the only job that didn't have to fumble around with Echo Drops whenever a mob dropped an aoe Silence. Unfortunately, this was more than offset by the fact that mobs that used Amnesia (essentially, Silence for physical abilities) or even just TP reset (all too common) pretty much crippled them.

FFXIV is much more solo friendly than FFXI was, so it wouldn't surprise me if they could port over the job with much the same play style, though adapted to the ability format for this game.