I'm really, really looking forward to Greece, even if they kept up with the lamentable leader choice. Not quite the early rush power of Rome, military expansionist power of Songhai, or totally crazy Bushido Code ability, but between being able to get a firm lead with Phalanx and Companion Cavalry
love: for finally putting those guys in there!) and an utterly abusive special ability, it seems like it would be tough to knock them off their early lead, which could easily end up with a diplo victory. I suppose the various city-state bonuses could be used for any win in theory, but since they carry as much weight as any civ in the UN, that seems like the easiest way to leverage the trait. However, it seems like against human players the Hellenistic League SA won't be as good since a savvy player could just go around sniping the more influential city-states.
And actually, on top of that let's not forget that Phalanx only fall short of Swordsmen by 2 strength and don't require a resource in addition to countering cavalry. That could really bolster a resource-strapped army. And while we don't know the hammer cost for the two, it's even possible that a Greek army could forgo swords all together (which, I guess, would make sense from a historical perspective).
Other than that, Rome and Russia do seem like powerhouses and I've got to say that while I was hoping for a more modern industrial/military powerhouse Germany, I'm liking how Furor Teutonicus is shaping up with the likely increased prevalence and power of barbarians late into the game.
As for an entirely different set of strengths, Arabia looks like it could be an absolute monster depending on how much that trade bonus amounts to. Plus, it looks like while their UU has slightly lower strength than that it replaces, it may be the only in the game that can attack from a range and retreat (may be wrong on that one though, but pretty certain it's the only one in that era), which could be really, really exploitable along with the fact that the speed and range essentially nullify the unit's one hard counter. And if it ends up not requiring resources… *shudder*
(Plus, it would be nice to see an Arabia that's actually good.)

And actually, on top of that let's not forget that Phalanx only fall short of Swordsmen by 2 strength and don't require a resource in addition to countering cavalry. That could really bolster a resource-strapped army. And while we don't know the hammer cost for the two, it's even possible that a Greek army could forgo swords all together (which, I guess, would make sense from a historical perspective).
Other than that, Rome and Russia do seem like powerhouses and I've got to say that while I was hoping for a more modern industrial/military powerhouse Germany, I'm liking how Furor Teutonicus is shaping up with the likely increased prevalence and power of barbarians late into the game.
As for an entirely different set of strengths, Arabia looks like it could be an absolute monster depending on how much that trade bonus amounts to. Plus, it looks like while their UU has slightly lower strength than that it replaces, it may be the only in the game that can attack from a range and retreat (may be wrong on that one though, but pretty certain it's the only one in that era), which could be really, really exploitable along with the fact that the speed and range essentially nullify the unit's one hard counter. And if it ends up not requiring resources… *shudder*
(Plus, it would be nice to see an Arabia that's actually good.)