Aelf,
ahh the debate begins. yes play under the patch you will find the game balance better and the AI more of a challenge.. but emperor will not be soo easy so it will again add to the difficulty level.
Korea is protective and financial, giving way to a science based somewhat defensive early empire.
their UB increases the research of the university to +35%, so you can have 6 cities with great beaker output while getting the prereqs to oxeford ready.
if you want to combine this with religion because they start with myst, all the better as temples increase happy for another cottage, monastaries increase research, univ of sankore will pay off from that specific effort, AND improved diplo except to the founder of the other early religion..
if you happen to start by stone grab the pyramids, otherwise I'd shoot for the great library. no running of caste system but with the library then the GL you'll get scientists. I would advocate THIS EARLY in discussion running:
library, monastary, university, academy in 6 different cities. oxeford in the capitol or another city with high beaker output. (like if you wanted to build the GL in another city and leave a beurocracy powerd capitol to make military units)
last emperor's challenge you had the capitol in the 200bpt's and 1 other city nearing the 100bpt's. last time I played this way I had 6 cities well over 100bpt by the time I could build oxeford. all other scientists should either be settled in the capitol or popped for techs. once the cottages hit full the beaker output is a bit gross. run scientists on top of it if you get ahead in pop or just to boost overall beaker output.
dedicate a different city to production of archers like crazy, but be prepared to switch gears when you unlock hwachas. those by themselves with minimal protection of archers will steamroll cities in this time period. pick someone and wipe them out.. maybe another civ as well before the hwacha loses its usefullness. right about then you unlock longbows, upgrade your archers in the fronteir and dig in until you're ready to conquest again.
as far as philo, by all means. but I'd stay away from priests except to get the shrine out. scientists are worth more beakers for tech popping and you might want to try popping 6 academies and see what it does to tech speed
You play better midgame then me so I'm sure you can capitolize on this better, but those are my suggestions
NaZ
edit: added bpt marker to clairfiy for other readers