Thanks, Gandalf!
I'm really glad you appreciate them.
Using SemiRandom on them sounds like a great idea.
Since I don't have the time or the energy to make these into Nations, I also thought I'd mention some thoughts on the subject, to possibly inspire someone else to come along and take up where I started.
SemiRandom: The Galicians came from the Iberian Peninsula (Spain and Portugal), so they might show up in warmer climates, close to water. An island would work great. In retrospect, I think I'd add a small amount of sailing to the Galician Chieftain.
If I were doing a Nation that featured these Galician units, I think I'd base them on the ancient "sea peoples" that were apparently operating in the Medeterranian, circa 2000 BC.
http://en.wikipedia.org/wiki/Sea_people
The original granddaddies of all pirates, in other words. Ones that caused a lot of trouble for the Egyptians, 4000 years ago.
SemiRandom: The Keltoi ofcourse ranged all over eastern Europe, so they might be found anywhere. It also wouldn't be unreasonable to add them to Marverni, or to make them a Celt-themed site summon. For that matter, it might be nice to see them added to Marverni's home province, as a recruitable, that would remain (ala hydra hatchlings) even if Marverni disappears.
SemiRandom: Dacians ranged from the Carpathian mountains to the Black Sea, so either mountains or lakes would work.
There's a lot of interesting things going on around the Black Sea area, and I think it would be quite possible to wring more than one good Nation out of there. If I were doing a Nation with Dacians in it, I think I'd go with something based around the Sarmatian peoples, and then add Dacian units in, as allies.
I'm not sure if anyone's aware, but there's a new theory that suggests much of the Arthurian cycle was actually based on elements of Sarmatian mythology, and encounters with Sarmatian military units who had been transplanted to Britain, after being conquered and forced into military service by the Romans. Apparently, they had mounted warriors who were not all that terribly different from medieval knights.
SemiRandom: The Cossacks would be the easiest to place: Pine Forest all the way. The colder the better.
A Cossack Nation is certainly possible, and would be nice to see. It might feature everything from proto-Russian Cuman/Kipchak influences and myth, more Black Sea elements-not to mention Siberia, Khazakhstan, and even Romish (Gypsy) flavours. It could become a nice counter-balance to Bogarus.