It's a bit odd that having a cast bar automatically turns a job into a 'Caster'. Is RPR a 'Caster'? Is SAM a 'Caster'? The primary assumption that people have are that Magical Ranged jobs are uniquely challenged by having to work around cast times, and that the APM loss by watching your 'Now Loading' bar fill up while dribbling paint from your mouth somehow outweighs actually weaving at high speed. And when you actually question it the separation of ranged jobs into upper and lower tiers becomes absurd.

I don't think the addition of a few walking casts on select Physical Ranged jobs will destroy the role, but it will make more people questioning why a 25 APM PCT simultaneously out-damages and out-supports a 45 APM MCH while not having to give up their mid-combat coffee breaks between burst windows. You just need to systematically remove their excuses until there's no defense, and then players will stop defending it. It was the same way for Living Dead as well, it was only when Holmgang was buffed to the point that nobody could deny that it was unilaterally broken in early Endwalker that Living Dead got rectified. Until then you still had people trying to justify it as being balanced.

And SE can ignore this all they like but they're really hitting turbulent waters in Dawntrail, and they really can't afford to fail at this game given the rest of their prospects. So if their five person job design team has unyielding opinions that are driving away players, well, I'm guessing that they'll eventually agree to toss out the bilge or sink the ship. Either way, they can't afford to drive entire swaths of players off of roles like that.