I think the thaumaturgy stupidity is somewhat balanced by outright Sorcery being far more accessible over all, even for mortals, who were the people who primarily used thaumaturgy in 2e/2.5e; as opposed to needing to shell out an assload of xp to get Occult 5 and Essence 3, they only need Occult 3, presumably awakened Essence, and then purchase a shaping ritual as a 5-dot Merit.
I like thaumaturgy, but I must admit I can't see why would you need wide-spread use of fiddly little rituals when you could learn to cast actual spells.
The main thing/difference between 2e sorcery and 3e sorcery, was that in 2e, the onus of 'deforming' the game/setting around the sorcerer lied with the Storyteller. If you are a sorcerer or a sorcerer is in the local environment, that is an impactful thing. This tied into Sorcerers, while not being 'rare', were also exceptional enough to be Notable.
Like, Infallible Messenger is one of the best one-way communication methods in the game. It's as secure as the sorcerer's loyalty/professional standards are, fast and nearly impossible to intercept or prevent. A kingdom that employs a court sorcerer just for sending messages is an
amazing force multiplier.
Then you get into stuff like summoning automatons, raising fortifications in a few hours, knocking down castle doors or summoning plagues of bronze snakes. Sorcerers are WEIRD and DRAMATIC... but only if the Storyteller bothers to remember that.
In 3e, which is arguably a good design decision that is equally limp-wristed, is that it puts the onus of dramatic influence on the Workings System. By mechanizing the Big Things a sorcerer can do as complicated projects, it creates a mnemonic that players and storytellers can refer to. "Oh yeah you Made this thing so I remember it and can now track how it works with its traits."
That's not exactly a bad thing, but it lacks a certain kind of creative alchemy that the 2e approach aimed for. Note that 2e
failed, but it's approach was not itself a bad idea.
As for why 2e thaumaturgy is hands down superior to 3e thaum, setting aside mechanical implementation on both. (2e thaum is too impractical to learn for PCs which makes people ignore it.)
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