My thought exactly. Concordia looks nice and tidy but grand European strategy + DLCs remind me badly of Paradox games and their abusive myriad of DLCs that, let's be honest, are necessary if you want a normal and full game experience.
I'll wait for Concordia's DLCs to be revealed before contemplating buying even the base game.
I believe that those DLC's will be some kind of new campaigns of zoomed i regional maps focused in the respective zones
In one of the screenshots I can see Empre maps with big zones or provinces and other screenshots more focused in Italy for example. The names of some DLC's can give us clues with things like Crete an Greece, etc... They wll be some new campaigns for the base game.
You're right, it looks like the base game only has Italy containing distinct provinces which makes sense for the game and DLCs' releases because Rome conquered first villages around itself then the entire peninsula then extra-italian territories that seem to be considered as unique blocks in the base game.
Out of solidarity with you, I'll play Hispania DLC before the Gallia one :-) First thing first: build many forts on Ibiza to repell the worst tribe of all: TOURISTS, or backup strategy... tax them to death (inspired by modern day Ibiza)!
Hm, 3 new DLCs just popped-up...