Hear me out now....It works
Just in terms of a guardian druid there are 2 big playstyles i have found thanks to the mythic trap calculator (since WoWhead has less resources than a guy with spare time)
there is BIG thrash bear where aoe is not just massively damaging but also serves defensively like back in legion.
there is also arcane bear which works with the talents from the balance side of the general tree where you do give up some defensive abilities but gain a lot of arcane damage and healing.
a few other styles are healing bear, cat bear (finisher adding a bit of extra dps), and wall bear (full on defensive and healing power)
Important to note that in no way am i saying these will be highly used or balanced or the most "viable" but personally i think that is the great thing about this system because you literally can make a terrible terrible build but it will still function because the core rotation is just whatever talents you take. My feral druid rotation can be one finisher with a bunch of ranged abilities and some heals.
compared to now where the biggest customization comes from like 3 talent rows