There seem to be some misconceptions floating around. The level 20 capstone is not meant to be a huge jump in power. The big jump in power is supposed to be at level 17, give or take one.
I have. Druid is highly overrated as an end game mechanic - CR 6 critters aren't sticky, and the damage is often laughable against the monsters you'll be facing. A single epic level monster with a good Hold Person cast, or a Power Word, against a CR 6 critter's stats? Dead. And, yes, level 20 characters will face that danger. Furthermore, its only good if we look at it from the perspective of the Moon Druid. Land, and every other subclass from now on, don't care. This is more of a white room theory problem than an actual game problem - any DM in a game can deal with it in a wide variety of ways. Like the idea of the flying carpet archer kiting the Tarrasque easily.Maybe for some classes that would be true (Ranger, Sorcerer, arguably Wizard). For other classes (Druid, Fighter, arguably Barbarian and Monk) the capstone is far more attractive than the level 17-18 power.
Look at the actual capstones involved rather than generalizing from the "tier" model.
I think 3 levels of fighter is worth it, unless you know the game is going to 20.
Fighting style, action surge, and either extra AC (shield spell from Eldritch knight), more criticals (champion), or extra burst damage (battle master) is worth it.
I have. Druid is highly overrated as an end game mechanic - CR 6 critters aren't sticky, and the damage is often laughable against the monsters you'll be facing. A single epic level monster with a good Hold Person cast, or a Power Word, against a CR 6 critter's stats? Dead. And, yes, level 20 characters will face that danger. Furthermore, its only good if we look at it from the perspective of the Moon Druid. Land, and every other subclass from now on, don't care. This is more of a white room theory problem than an actual game problem - any DM in a game can deal with it in a wide variety of ways. Like the idea of the flying carpet archer kiting the Tarrasque easily.
Okay, setting aside that overpowered was a goalpost move (its admittedly a knee jerk response at this point), the only reason people think that the Archdruid is really good is due effective infinite THP generation. However, for a level 20 character, playing as a CR 5 critter when facing against CR 20+ threats, it is annoying. Your attacks are weak, your saves are weak, and you're physically ineffective beyond being an ignorable HP buffer.For the sake of brevity, let's zero in on your first attempt, the Moon Druid. You've claimed that the capstones are worse than the level 17-18 powers. I gave druids as a counterexample. You're trying to refute that counterexample by observing that the capstone isn't that great against "the creatures you'll be facing" and isn't broken. I agree with that observation--it's not broken--but here's the thing: the capstone (unlimited wild shaping) is undeniably better than the level 18 feature (beast spells), which was the claim the counterexample is intended to refute. At level 20, you can freely turn into a bird to go spying, land and switch to a wolf if an eagle tries to eat you (or just become an air elemental and scare it away), turn into an earth elemental to burrow underground, kill a hundred orcs without a sweat due to Onion Druid-ing, and then join a 1st level party in the pose of the ranger's pet mongoose. It completely removes the resource constraint on (admit it!) one of the funnest abilities in the game. At 18th level, the druid won't even attempt to spy in bird form because he's saving wildshaping for air elemental form for emergencies instead... and he can't afford to burn two uses on Earth Elemental to burrow underneath a structure either. In what way is Beast Spells half as transformative as unlimited wildshaping via Archdruid?
Yes, the 9th level spells are the druid epic benefit. And, yes, they're more powerful. Fun is not a measurement. If you want to mess around and feign being someone lower level's pet, then you don't need a level 20 ability to do it. If you want to kill a 100 orcs because, then you don't need to be a level 20 character. To scare a hawk? A level 1 character can do it.Edit: or were you thinking more of 9th level spell access at 17th level? True Polymorph/Foresight/etc.? That stuff is nice, about as nice as Archdruid in a completely different way... but it's not bigger than Archdruid, nor better. It's just different.
Okay, setting aside that overpowered was a goalpost move (its admittedly a knee jerk response at this point), the only reason people think that the Archdruid is really good is due effective infinite THP generation.
StevenBrust said:All literature consists of whatever the writer thinks is cool. The reader will like the book to the degree that he agrees with the writer about what's cool. And that works all the way from the external trappings to the level of metaphor, subtext, and the way one uses words. In other words, I happen not to think that full-plate armor and great big honking greatswords are cool. I don't like 'em. I like cloaks and rapiers. So I write stories with a lot of cloaks and rapiers in 'em, 'cause that's cool. Guys who like military hardware, who think advanced military hardware is cool, are not gonna jump all over my books, because they have other ideas about what's cool.
Oh, and do you know who else can do all the above stuff you listed? Any epic level spellcaster through use of polymorphs.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.