I'd say you're guilty of cherry-picking, here. Cleric's Stance, based on what we know, isn't mandatory. Surecast isn't. Heavy isn't. Nobody's focused on those, however - we're focused on other abilities that ARE currently mandatory, and don't have any announced changes.
Currently, Swiftcast is mandatory. Shroud of Saints and Esuna are mandatory. Protect is mandatory. That's four of the five role-based slots taken up for a White Mage. We have received absolutely NO indication that SE has gone and modified things to make these abilities less crucial (reduced Raise cast time, reduced need for MP / enmity management with Shroud, fewer fights with nasty status effects, etc.). You can hazard a guess that they have done so, but that's an assumption on your part, one that - as I stated before - places an awful lot of faith in a development team known for making boneheaded mistakes. I don't personally have such faith in SE, nor, it appears, do a lot of other people.
More to the point, however, what I need to say right now is whatever the hell it is I feel I need to say right now. You don't get to decide what is necessary for other people to say - they do. I also don't happen to consider this a pointless exercise. It helps determine whether I preorder Stormblood or not; it helps me identify in advance issues I want to examine when the combat changes release; it helps me release whatever degree of stress I'm feeling over pending changes to a job I've played for years now. It also, theoretically, helps SE identify potential problems a month before this system is finished, so that they can either course-correct in advance, or be readying a fix right from the start. Those are all valid reasons for discussing what I know so far, as well as any resulting concerns, with other people on the forums.
That said, I certainly don't begrudge you the right to remain optimistic. You're welcome to. I have no problem with an optimistic point of view. What I don't like is when people who are more optimistic than others attempt to trivialize the well-founded concerns of people who are feeling more pessimistic or concerned. That is essentially what you've done, in my mind, and it's why this reply is on the snarky side.