Considering tolerance of heathens and heretics is capped at 0 and tolerance of the true faith isn't
No it isn't. Heathen and Heretic Tolerance is capped at +3. Confucianism gives +2 and another +2 by event, which means you already get +3 Tolerance of Heretics without Humanist. Harmonising drops your base ToTF by 3, which at the very worse case scenario means you could have 0 ToTF but 3 Tolerance of Heretics.
In general, you shouldn't be at 0% harmony anyway.
Yes that's true, but why does Confucianism punish you for using its mechanics in the first place? The only other religions in the game that do that are the three American Pagan religions, and they get incredible bonuses out of the negative events, not -5% stab cost. And even if you're hovering somewhere around 20~30 Harmony, that's still -1.5 ToTF, +15% Dev cost and -1 Yearly Meritocracy.
In general, I find confucianism a fantastic religion
Anything can be done in Singleplayer. Even Animist can be used to WC in Singleplayer. Does that mean that Animist is a 'fantastic' religion? At least Animist doesn't punish you for converting provinces so there's that.
all religions are considered your faith
You
A. Cannot culture convert in harmonised provinces, which is particularly crucial for Korea moreso than Ming, due to them being the
only nation in the game to have one culture in its culture group. (Khmer will join them in this dubious hall of fame next update though)
B. Do not get the diplomatic benefits that you would get from just converting to a majority religion
C. Are locked out of the Religious Idea Group
you can conquer entire India with practically no revolts
This is also possible by taking Humanist Ideas with literally any other religion. Or by just playing a Sunni nation. Being Sunni gives you +5 Heathen tolerance from Dhimmis, Dhimmi privileges and legitimacy while also letting you completely ignore religious unity. Or being Tengri and synchronising Hindu. Or just
trade company-ing India like a sane person would do as Ming or Korea.
No they're not. Even Anglicanism, the worst Christian denomination, has better religious bonuses. Their -10% dev cost modifier alone leaves anything Confucianism has to offer in the dust, and they even get free cash and mercantilisim on top of that.
Shinto next door gives +10% land morale for free.
All Buddhist denominations give +5% discipline and +2 dip rep.
Tengri has all the good points about Confucianism (synchronising religions and tolerance), with none of the bad ones. They also get
-20% regiment cost. That they can also swap out for any of the myriad of good modifiers they give. Synchronising Shinto as a Confucian country gives +5% Inf CA. For Tengri it gives -1 Global Unrest and +5% Discipline. A rather
mild difference, innit.
Also, it's a unique religion with unique mechanics. Playing as a confucian country feels and plays different than any other country, which is what this game is all about.
This I partially agree with. Playing a Confucian nation is a completely different experience from playing any other religion, but it feels like a chore, because you're locked out of so many mechanics that other religions get (Religious conversions, Religious ideas, Good bonuses, Culture conversion etc.) that it feels less like flavour and more of a roadblock to prevent Ming and Korea from expanding.
Eating a 10 dollar sandwich from Subway is a decent experience. Eating that moldy green sandwich from the rubbish bin round the corner is a
very different experience from the Subway one; doesn't mean it's necessarily a pleasant one.
The most optimal way of playing with Confucianism (besides ditching it) is to take Humanist and pretend that you're an atheist nation with no religious mechanics.