Lilybell is that in theory. The problem is the devs then shove something even better than that into the newest healers (Panhaima, Physis II on Sage, Macrocosmos on AST) for no good reason. Ostensibly it is to enforce that parity issue. If SCH wasn't already ahead of the curve relative to WHM (though it's pretty clear they're Third only by the grace of how far ahead they've been in the past) I would be bothered by them distinctly -NOT- getting some equivalent to that, but the fact is SE didn't even bother to figure out what SCH even needed (and I'd agree it -wasn't- a Lilybell equivalent), and it shows. The devs don't seem particularly interested in even -trying- to enforce any particular paradigm, just whatever looks the prettiest and easiest to juggle in testing, in order to get the casual players to say it's fine and then they tell the vets to shut up about the consequences. And the result is the most efficient tools and rDPS wins. Every. Damn. Time.
To be clear, I don't have a problem if only a particular subset of all healers have -something- for a given situation. My problem is that lack of attention to how those edge cases affect their overall state. After the trashpile that was AST for the last three expansions, they couldn't even be bothered to figure out how to make Sage -distinct- in a manner that actually matters for 80% of the kit. And the result is that last 20% makes it flat out better just from prior game knowledge. That's been happening to WHM since ARR.