Gilgamesh of sumeria seems like the strongest esp guy to me too. I don't really think suleiman can beat those synergies.
Ziggurat helps speeding along the GSpy you need to get some tech after ultra-effective rushing with vultures. Pro means you can get some gold from wall-whipping and you should be safe for the midgame (xbows and lbows).
yeah, right. Gilgamesh seem a good choice for this. good synergy.
besides, a very militaristic and REXer guy. if you meet Gilgamesh, it should be 1 of your earliest victims. if you cannot early-rush him or block territory towards him, he is a trouble.
however, I didn't see Sumeria spending heavy tax on EP, even after when I was his only neighbour. I stole many techs from them, with low esp points.
i'm not a heavy EE guy but i use esp some. for a long time, i underestimated great spies but i like it now.settling 2 and 1 for SY makes 48 raw esp points. a philo leader woudl achieve 3 really early so Suleiman will also be good.
but i think
Charlemagne screams much more for military & espionage. very good synergy.
1) City Defense and Culture: he starts with mysticism so he can snag a religion (Polytheism better), that would also help him for culture. so he can also skip monuments/stonehenge. religion would also help him for city defenses, along with his prot trait, he is safe. especially when settled on hills, attacker has no chance.
2) Imperialistic, Marble & Stone: If he snags these resources, they will help him for below mentioned wonders and city walls, castles etc. IMP has an advantage for settling near these resources early.
3)
Imperialistic & The Great Wall: If he snags TGW, he would start having GGs very early. For this, he should research masonry early, so this would also encourage him for building city walls as well
4) Oracle & Code of Laws: Just like Gilgamesh, he should beeline Priesthood and oracle would help him building rathaus nearly as early as a ziggurat. That would probably give him Confucianism as well, so 1 more religion, more culture, larger happy cap with temples (as he had Priesthood early)
5) REXing: After CoL & Rathaus is in hands, he can fasten REXing much more. IMP trait will help on this period again.
6) Tech trading & Backfilling: According to map & other side strategies, you might have researched some of worker techs as well. And starting with hunting also encourages for earlier archery (good for prot leaders). But other most techs you have left over. Now in this period, most of the AIs should have beelined different lines and you will be having many different techs for them. By tech trading, you can backfill.
Try to trade tech with all AIs in the same turn, so they shall not trade the tech they took from you to have another tech that you can take from a 3rd person.
really, tech trading with all AIs in same turn is better.
You don't even need to have any alphabet for this, because most AI should already have it.
7) Engineering: To unlock his glorious UU, you should beeline eng. Especially if you succeed to research engineering before most AIs have machinery and feudalism , then you can raze many cities. up to this period, 1/2 of the AIs should have attacked you already and you should have 1/2 GGs settled and you will most probably spam landsknecht with good XPs.
8) Castle & Prot trait: What a coinsidence that his UU requires the tech that also unlocks the castles. And prot help for cheap walls & castles. You will have castles earleir than most/all AIs.
Shortly, because of his UU/UB and traits, he screams for beelining CoL and engineering which unlocks early espionage buildings. So he encourages espionage. After engineering is in hands, it is the real time for HRE. high EP, good UU, low maintenance and a large territory...