My understanding is that (Hard) on a dungeon is not actually meant to say it's objectively a difficult version, but rather to differentiate between a dungeon and a later (higher-level) incarnation of it when we go back to the same spot; the "Hard" is a completely different dungeon which just happens to be set in the same spot as an earlier, lower-level one was. We go to the Wanderer's Palace twice, so there's "The Wanderer's Palace" and "The Wanderer's Palace (Hard)". We go to the Fractal Continuum twice, so we get "The Fractal Continuum" and "The Fractal Continuum (Hard)". Same for the arboretum, etc.

You could just as easily label them "II", like a sequel. "The Wanderer's Palace" and "The Wanderer's Palace II: the Mamool Ja Menace". "The Fractal Continuum" and "The Fractal Continuum II: Mandelbrot Threat". Whatever.

None of which is directly relevant to the alliance raid tuning, admittedly.

(...though, I actually kind of like "Mandelbrot Threat", and now I need to find somewhere to use that.)