I'd like to talk about the powerscaling of Zenos vs WoL

[Rocl]

The Echo is the same in EVERYONE who has it.

This isn't the case. In 1.0, it was a little more specific, that some people had some abilities, but not all. There was a lalafell, for example, who had the Power to Transcend Words; this was our standard babelfish power. Minfilia, on the other hand, did not possess this power and needed an interpreter to understand the Sylphs who petitioned the Path of the Twelve for aid. (She likely had the Power to Transcend Time and walk in the memories of others; I can't recall if she confirmed it for us specifically.) The Warrior of Light possesses both of these qualities and the Power to Transcend Worlds and visit Hydaelyn in the Aetherial Sea (as of 2.0).

The EE1 itself breaks down and names these powers. The Power to Transcend Words/Time/Worlds--and is writ in a way which supports that someone might have one Power but not another; specifically that the Power to Transcend Worlds is rare, this seems to imply it's rare among Echo users. Of course, if the Echo manifested exactly the same in every person, there wouldn't be this rarity. The Power to Transcend Worlds definitely would've shortened a lot of the mystery inherent in 1.0's original scenario.

And finally, perhaps, the smoking gun of it all from 3.1's In the Eye of the Beholder MSQ:

No two manifestations of the Echo are alike. I, for example, can converse with beings of every shape and size─excepting beasts, contrary to what others would have you believe. Language has nothing to do with it, of course; rather, I am sensitive to the whispers of the soul. Their intent, their very essence even─the traces of which served to guide the elementals to Y'shtola.

The Echo is NOT the same across the board amongst everyone who possesses it. They've strung this point along now since the very beginnings of the reveal of the power, and I can't even begin to believe they've reneged this from 1.0 when they mention it in Heavensward. The unifying feature of these powers is that the Echo is "the power to transcend" (literally, sometimes, in Japanese), and that they "break down the barrier between souls;" however to claim that it is inherently the same in everyone feels disingenuous. Realistically, if you could learn to control the manifestation of the Echo, that's what the Path and the Scions might've done, right? Those without the Power of Words learn it from those with, and so on--but that possibility has never been explored or hinted, as far as I can recall.