That's 7 non-conflicting branches, of which you must pick 6.
FWIW, I personally preferred the old design where cultural victory required only 5 trees, but where policies got much more expensive (so the overall cost was similar), but Thal decided against this.
I would much prefer to revert to a system like this, than to remove the tech requirements.
And who grabs Honor for a cultural victory?
Its still useful; extra culture from garrisons, extra happiness gets converted to culture by mandate of heaven, and more gold/lower upgrade costs.
So going cultural early actually harms a cultural player?
It doesn't. If you want the later trees, then turn on the game option that allows policy saving. With policy saving on, you can never be worse off, because you can preserve your picks until you meet the tech requirements.
Shouldn't a culturally superior nation be allowed to advance its society faster than other nations?
It can; it can pick more policies. I don't see why it should be able to get around tech requirements though, if it lags in tech.
but I really just don't think they are that much better. Does anybody take Autocracy?
I wouldn't take autocracy in a culture game, but certainly it can be powerful for a conquest strategy, especially reduced maintenance and purchase costs. You can have a very large army with Autocracy. I do think the late-game trees could use a bit of tweaking though, I want to get a bit more experience with them before I make recommendations.
Is it just me playing in a skewed way, or is Tradition really overpowered, and Liberty a complete loser?
I am finding Liberty a bit weak these days, it provides the productive ability to expand rapidly but not enough happiness to actually do so.
I think the Openers for Liberty and Tradition are pretty balanced, the problem is that rapid expansion isn't that advantageous (especially with luxuries from 5 happy -> 4 and 3 unhappy per city) and many Liberty policies have poor staying power after the early game.
Finally, the gold looted per killed unit by Professional Army in Honor is stupendously much.
Agreed. It is insane how much gold I can farm from wars without ever taking any damage, using camel archers or keshiks. I would halve this gold, at least.
Reducing the happiness/wonder bonus, perhaps even change it to culture/wonder.
I'm not sure about this, but 1 happy 1 culture per wonder might be fair.
Make Tradition starter less powerful in initial culture compared to Liberty. For example, increase initial culture (from palace) by 1, and decrease what Tradition gives in Capital by 1.
I disagree with this. If Liberty gives +1 culture per city and Tradition gives +2 culture only in the capital (and the small bonus to tile-grabbing) then Tradition would be too weak.
Everyone gets loot at 20% of what Professional Army now gets
I don't like this. I'd prefer gold from unit death to be something unique to honor, it cheapens it if everyone gets something.
Sharply increase encampment destruction gold reward, to give disincentive to farming them.
Maybe, but I don't find farming that much of an exploit, as usually if you kill the unit then the Ai will come along and take the camp out.