Great! Should be fun
So let's discuss pick strategy: this is my ranking of traits from best to worst. Obviously some preference there, but it'd be nice to know if we're more or less on the same page.
FIN
EXP
CRE
SPI
IND/ORG
PHI
IMP
CHA
AGG
PRO
As for civs, we're seeing starts before picking so IMO we should pick based off of starting techs that work well with the capital. The obvious exceptions being Inca and India. Good civs by starting tech:
Hunting:
Zulu(Impi,Iknhandi,Agriculture, Hunting)
Mongolia(Keshik,Ger,Wheel,Hunting)
Khmer(Ballistaphant,Baray,Mining,Hunting)
Vikings(Berserker,Trading Post, Fishing, Hunting)
Aztecs(Jaguar, Sacrificial Altar, Mysticism, Hunting)
Holy Roman Empire(Landsknecht, Rathuas, Mysticism, Hunting)
NOTE: The last two should really only be considered if our primary food source is deer, otherwise the starting techs are too crappy
Agriculture:
Inca(Quecha, Terrace, Mysticism, Agriculture)
Egypt(War Chariot, Obelisk, Wheel, Agriculture)
China(Cho-ko-nu, Pavillion, Mining, Agriculture)
Sumeria(Vulture, Ziggurat, Wheel, Agriculture)
France(Musketeer, Salon, Wheel, Agriculture)
Ottoman(Janissary, Hamman, Wheel, Agriculture)
Zulu(Impi,Iknhandi,Agriculture, Hunting)
Fishing:
Rome(Praetorian, Forum, Mining, Fishing)
England(Redcoat, Stock Exchange, Mining, Fishing)
Greece(Phalanx, Odeon, Hunting, Fishing)
Native America(Dog Soldier, Totem Pole, Agriculture, Fishing)
Carthage(Nubian Cavalry, Cothon, Mining, Fishing)
It's not really worth picking any civs for their starting techs after this, so I'll just list some civs that are still noteworthy even with meh techs
India(Fast Worker, Mausoleum, Mysticism, Mining)
Maya(Holkan, Ball Court, Mysticism, Mining)
Mali(Skirmisher, Mint, Wheel, Mining)
Byzantium(Cataphract, Hippodrome, Wheel, Mysticism)
Corea(Hwacha, Sewon, Mysticism, Mining)
Synergistic Trait+Civ Pairings to consider
CRE Maya, Greece
EXP Inca, Carthage
ORG Sumeria, Holy Rome, Aztecs
CHA Mongolia, Byzantium
AGG Greece, Rome, Sumeria, Zulu, France
I generally think people tend to overvalue synergy as opposed to just picking the most powerful combination possible. For instance, I wouldn't go out of my way to pick PHI Corea or IND Mali. That said, I think the above pairings are powerful enough to consider when picking.