One button astro was boring, and the "good" astro card system was fishing aoe balance. While I aggre new it feels dumb when you cannot get 3 symbols, it was way worse when you used to constantly get bole, arrow or spear (maybe spire and ewer, can't fully remember). A bit the same as noct sect which was less interssing than dia sect as extends regen duration is far more usefull than extends shields ones.

If instead of that was "good" in the past, turn to what could be good for the future ? Healer need some trim to their abilities and would probably gain to have some others dps/offensive supports tools as the game extends. But, having a 1/2 or 1/2/3 cycle would only be like a smokescreen, and systems alike the WHM lilies would be way more engaging. Also i think healers could get some tools for party burst phase.