As it turns out with the current map, the province of Pannonia is oversized and goes far north from the Danube, the historical border marker for the Roman Empire AND the real Pannonia province.
Here it is:
I thank CanOmer greatly for this map, I posted this one instead of the real map because this one is clear and non-coloured, and Pannonia can be clearly seen here, just above Thracia and Illyria which are just north of Macedon faction. Open the image in a new tab to see it in larger size...
And the real Pannonia province, which didn't ever cross the Danube:
And the Danube, the historical border of the Roman Empire (except for Trajan's conquests) in the northeast, which is completely different in Rome II especially in Pannonia:
So is CA now again forcing us to take unwanted territories? In RTW and Medieval II, we had to take whole of north Africa just to get a tiny settlement on the coast, especially in Medieval II where if you took just Tripolitana you got whole of Cyrenaica, Libya, parts of Tunisia and Algeria, parts of Egypt and many more. In RTW, we had to take all of Scotland just to take York and north-eastern England. Those flabby provinces were nowhere to be seen once Empire came, and I had forgotten them. But now this again.... 
Even if you do not own all of the regions, they are so badly shaped you automatically get a frontier above Danube, or the people above automatically get a frontier below. The game is forcing this on our throats.
So now we have to cross the Danube just to have our full province and be able to enact edicts? Syria, too, is very unhistorically sized. Roman Empire, until the time of Trajan, never owned this much of Syria. It owned a straight border running across the coast of Levant to Anatolia and ending only in Egypt.
Is this ever going to be changed? 
What do you people think?
Note: Before people start bashing me and 'deal with it' or 'cry me a river' people or that desperate CA fanboy crowd comes in, please note that this is constructive criticism. I am entitled to express my opinion, which is all I do. Everyone is free to have his or her own opinion and can disagree with this. The purpose of this thread is to actually know what people are thinking about this.