Here is a video of the final fantasy Lancer class in action. The perks of the class are the following. First o fall they have a little bit extra when it comes to range for attacking mobs. Which may or may not help you in the field of battle. You can see the player easily moving around the mob via side steeping and attacking them from different angles. The downside seems to be the slowness of the animations for attacking mobs with this class. He seems to have a long delay when it comes to attacking mobs which if they keep things in terms of games where your actions determine your damage then this class might not be used as much.
The lancer class is going to one of the disciples of war in final fantasy 14. The lancer class will be mainly in use of spear like weapons and have a ranged attack in the game. You can get an extra attack against mobs in the game because while you can attack from a distance the mob will have to run up to you. The lancer can also increase other players TP points in the game with their skills. The lancer has the ability to steal HP from other mobs in the game with their special ability. Finally the lancer can do a special move called collusion which it not only attack the enemy but it will give that enemies enmity to an ally that is between you and the enemy.
The lancers weapons are also something for players to fear. They can attack multiple targets at once with different sweep attacks they have. The downside with sweep attacks from the lancer is you can not hit flying enemies with them as they only attack the low parts of your enemies. The lancer can also slow down other enemies with the skewer skill. However this one as well can not hit flying enemies. The best move of the lancer is the feint skill which allows you to be sure of a guaranteed hit with your next attack but you have to dodge an attack from another mob in the game.
Well there is some information for the upcoming lancer class in final fantasy xiv.