We'll agree to disagree about that being denying you a voice; I see that more as questioning a double standard that seems to be prevalent here, in that dps and tanks are (much like healers) speculating what their rotations will be based on given tooltips. Entire rotations for several jobs have already been mathed out, and yes there is already some suggested changes;
Nemekh, for example, already pointed out some serious problems if SMN were to be released in its pre-Alpha state;
Red Mages know what they will and will not be getting in the final build of the game as well, and this has caused some to mourn the loss of abilities they wished they could have kept. These examples are both of people looking at tooltips we have available to us, and giving feedback based on knowledge of what the changes themselves mean even if we haven't been able to play the jobs at 80 yet.
We have practically full data at 80. Potencies are subject to change, but they're not going to overhaul abilities between an alpha build and final release. They won't suddenly add back in SCH's dots (as an example), and if they do I'll be colored very surprised and myself cede on that point. People have a very good guess at what the game will look like at 80 based on the tooltips we've been given; this is through combination of tooltips and experience at the game as it currently exists.
Tooltips aren't suggestions of what the ability could be. They're point-blank descriptions of what abilities
are.