I don't see why could anyone be against an additional feature. However I DO agree jump is irrelevant and innecessary if it's only used as an /emote, if it's going to just be that I think it would be better that the dev team uses their time to fix other issues or add content (instanced pve! yay!).

But if "jump" itself is used as another action that can change the way our characters interact with the enemies and the world I think it's worth it. For example you could jump to avoid certain bosses attacks that travel through the ground, or to climb to a safe place while the boss does a huge aoe, etc.

I think it would be also interesting that certain classes could use jump better than others, ofc the Dragoon(if implemented) seems like the best class to do huge jumps to gain better position in the fight, or even landind using a skill that triggers once the character lands. But not only that, a gladiator or a marauder could be worse at jumping since they are equiped with heavy armor, or mages since they physical power tends to be low, while thief/ninja classes could use jump as another tool to move between enemies.

About ppl complaining it would ruin the atmosphere of the game, or the inmersion.. err you know if you go out to the street and try hard enough you can jump, even in RL! It seems pretty easy to understand that our characters SHOULD be able to do the same. You don't want to see ppl spaming it? it's easy, make it so jump uses stamina, like another skill, but only do that if rly jump will bring something to the PVE enviorenment, if not, it's just better to don't waste time on implementing another emote.