This RPC was so interesting to read! I have never tried out EE before and it inspired me to run a few games to test it out.
After thinking it over a bit, I chose Liz (phil/fin) because:
1/ Phil = more Great Spies
2/ Fin = more money so it can generate more spy points with cultural slider
3/ English UB = even more money to affect the slider
4/ English UU beats rifleman, so she stands a fair chance of winning a battle even if she is not ahead in tech midgame
I played continents map for all 3 games on Prince. My start in all the games involves first a worker and then chop a settler (which tries to claim stone or if none, lots of forest). Capital goes for Great Wall and 2nd city goes for Pyramid (but with a monument slipped in). I deliberately skip Stonehedge. That way, I always get 2 GS and 1 GE as my 1st 3 GP. I build national epic in capital and run as many spies in capital as I can in the entire game. I also build GL in capital and Pathelon in my 2nd city (the GE will rush 1 of them). In early game, I expanded like mad and left both my research slider and spy slider at 10-20% (it was in complete economic ruin). For both GS, I used for infiltration, 6000 spy points can grab me almost all techs I need. With representation from Pyramids and by running a spy at each city, together with GL and academy at capital, I can do a bit of research on my own even if research slider is at 0%.
The main problem I encounter is this: the AI seems to be worried when it sees tons of spy points on it and it reacts by going for more spy points itself, which affects its own research. So using the spy points normally generated per turn on just 1-2 AI seems to force them to slow down their research as well even if it was suppose to be a decent techer. This effect is more serious if I use the techs I stole to trade with other AIs. So, quite frequently, around mid-game, that AI will have almost no techs I can steal from and fall behind other AIs. A 2nd lesser problem is that by relying on stealing techs and not being Industrious, it is very hard to build any wonders after the 1st few as I almost always get techs later than AIs. I countered this somewhat by running engineers and using them to rush wonders.
I try to run rep + nat + merc + pac as civics. I try to get GW, Pyramids, GL, Pathelon, SoL in early to mid game. As I almost always go for domination victories, I prefer to research Assembly Lines (infantry + factory + very nice wonder) and Facism (free general + nice wonder) late game instead of Communism. By then, I have already discarded EE and go warmongering.
I now realise that GSpy is actually the best GP early to mid game. Before reading Madscientist's RPC, I normally just settle the GSpy for the beakers. It is amazing how I can keep up with techs without tech brokering even when my economy is in a total wreck with tons of undeveloped cities (6000 spy points is completely overpowered early game).
I wonder if this will work at higher levels though... Building the Pyramid at the 2nd city seems to be a close gamble.