Few thoughts from me then, not sure if it belongs here or in playthrough section.
Fresh to deity, started to play 2 betas ago. I don't like how Authority plays (its so slow in the beginning and very boring, only war) so I'm always going Progress or if no space for expansion Tradition. After few lost games I've started to actually winning...
Yesterday I've decided to check out new beta, and since forum is full of info about difficulty spike I went empy with cheese choice of civ (Carthage

I'm playing with heavily modified VP, including new luxuries, civ&reforms, EE for VP, expanded world congress, extended naval warfare, events&decisions, bunch of extra civs, 3rd/4rth extra components and I guess very important: more wonders mod (version where up till Renaissance every wonder has extra condition before it can be build, amazing, prevents spam wonders by one runner).
My settings (empy diff, large, epic, Communitu 1.15, 14civ, 20 CS)
-in my game runner is Netherlands (tradition), he was making 600+ gpc, had 17 iron, yet I've sold him mine 11 for 88 per turn...sold also horses to Montezuma, 6 for 42 gold per turn...I was making 300 atm so it gave me huge boost to my economy, feels like cheating, sth is definitely wrong here guys.
-in terms of tech I was constantly behind till Industrial (I was settling fast to block Shaka), thats the plus++ but warfare on empy is way too ez (understandable), my closest civ was Shaka (as mentioned), smashed him just before his impi's poped now he is my vasal, and Venice, my next close civ is my vasal also, his fleet was pathetic, didn't plan the war but he put 2 citadels and stole my iron and broke my monopoly on lapis, so...
-religion, the AI is doing really amazing job now, had to go shrines first everywhere and still got only the last spot with some crap leftover beliefs (granted, didn't have stonehenge cos of my capital being on the hill)
-cities are still paper wall for mid game+ naval units, even with all the hp buildings and 15+ pop, 3 turns and it falls to corvettes...
-boredom is not an issue anymore, but boi poverty keeps me under 50% all the time even though I went full loco with making as much gold as I can, also went industry to get that 15% less mod, and will have to go Order if I play a little more, at one point my capital pop17 had 9 unhappines, 2 from war, 7 from poverty lol, never seen it before at this scale, I've prolly overexpanded a little too much

-AI expansion is very decent, saved 3 settlers to imp them to pioneer but I doubt there will be decent spot to settle since even all the small islands are taken.
Those are few things that stands out for me atm, cheers.