I feel like because I said D&D, everyone's answer is pretty much standard at subclasses.
Which is correct, technically correct. The best kind of correct.
Still it does not solve my gripe with the chinese rigid path to godhood.
Then it hit me, it is rigid because it is meant to be rigid.
As the work already complained, why bother go looking for own path when there is a tried and true method to go down on? Suck air, liquify air, solidify liquid to marble, mpreg and peanut. Tried and true.
Same as martial artist, first make body train to limitless stamina, then learn ki blast, then make sixth sense, then Iron Body, Ki spam, Will Over World.
There is a path because any other paths had long been discarded or made obselete, the path is meta.
So for anyone who isn't actively training on the level provided skills and instead continuously dabble on outside-class skills is moronic. Like how cultivators who dabbled on pill making forgetting that it is their qi level that makes the difference.
This works as an explanation if we have a few assumptions made for the system
1. The system has been mathed out to the point where a consensus has been made and everyone of importance knows at least one meta build that can handle most situations.
2. Everyone cares about optimization.
3. The amount of resources invested are comparable on all known paths
4. Counterplay doesn’t meaningfully exist.
So, continuing my earlier example from 3.5, the optimization community has six tiers they sort classes into, in descending order of power and flexibility.
The biggest and most powerful houses would probably be running builds from the so-called tier 1 classes. Wizard, Archivist, Spell-to-power Erudite, artificer, etc, because these are the classes that can do EVERYTHING well.
HOWEVER. Tier 2 classes, such as Sorcerer, Psion, and Favored Soul, would still have space because they can do ANYTHING well, but they need to dedicate themselves to that one thing. Why are tier 2s worth pursuing in this hypothetical? Because a Wizard, Archivist, Erudite, or artificer needs to spend a frankly jaw dropping amount of time and money to reach the point of near omnipotence and until they have reached that point their tier 2 counterparts can probably take them one on one. Even when they do, two tier 2s could probably take them and there will be more than 2 tier 2s for every tier 1 due to the extreme investment.
Tier 3s, ironically considered to be the best balance point for a fun and balanced game, are defined as being specialized in a single role they don’t get to choose, or being ok at everything. If a Warblade gets into close combat with a Wizard of the same level, there is still a meaningful chance the Wizard will lose. Further, they get good faster than the Wizard. They are only tier 3 because they are strictly melee.
Binders, similarly, get very strong very fast by allowing Eldritch beings to semi-possess them, but their power roof is below that of a sorcerer. However, the Anima Mage prestige class alloys together sorcerer and Binder in a way that makes the sorcerer only slightly weaker but gives them access to a much more well rounded and adjustable tool kit.
On the other end of the spectrum, we have the Healer, which is legitimately better at healing than any tier 1 class and narratively nowhere near as tough to level … it’s just that a combat style that is purely reactive is inherently at a disadvantage against one that can be proactive or reactive as necessary.
It is only when one gets to tier 5 or 6 that a same level wizard would basically always be on even footing, if not outright superior. Even there, some of the classes have strange and unique abilities that can not be replicated anywhere else, like the Truenamer’s ability to un-counter a spell that has been dispelled, causing it to resume functioning. It’s not worth it to be a truenamer (one of the most memetically bad classes in 3.5) just for that, but it’s worth noting that no one else can do it.
There is a massive difference between choosing the meta path and the meta path being all there is. Further, the team meta may be very different than the solo meta, which also may be different from the faction-level meta (where you might have entire subfactions dedicated to supporting the main faction by making magic items, acting as a bodyguard, or providing them with buffs).