One thing that's absolutely fundamental if we want our storylines to be convincing is that they have to be consistent. In particular, we need to explain coherently what happened in the years leading up to 1419 to make the world so different, and I think the current storyline in Europe needs reviewing in places. Here's a quick summary of where some of Europe's Aberrated powers seem to have come from, as far as it can tell:
Kalmar: this is a historical entity, but in real life, it broke up with Sweden leaving the Union. In Abe, it's Norway that doesn't like the union, though for some reason they are keen on Scotland. But why do they prefer Scots to Swedes/Danes?
Finland: In the Abe world, Sweden is considerably weaker than real life. One symptom of this is that it never gets assertive enough to break away from Kalmar; another is that it never conquered Finland. As a result, the Finns picked up Christianity from the East.
The Teutonic Order: In this version of history, they battered Poland and completely conquered Lithuania. This isn't actually too far from history: Lithuania especially got attacked repeatedly by the Order, and they only finally gained the upper hand in 1410, when they allied with the Poles and defeated the aggressive Order at the Battle of Grunwald. But what if that battle had gone the other way? Alternatively, what if they'd never allied with Poland, or converted to Christianity, before being picked off by the crusaders?
The Hanseatic League: This is also a historical power. The difference is that while the real Hansa got weakened over time, the Abe one gets stronger and stronger. But how do they turn themselves into such a military power (something they never were in real life)?
Granada, Byzantium: These are powers from a bygone age, which somehow managed to survive in reasonable shape in the Abeverse. One question about Byzantium, though: what happened in the fourth crusade? What if we say that in Abe history, the fourth crusade actually got to the Holy Land? Byzantium in Abe isn't all that hostile to Catholics, and a non-diverted fourth crusade would help explain both this and the strength of the KoJ.
KoJ: Apparently, Jerusalem survived till 1419, and maintained the size it and the other crusader states had put together at their height. But how? Historically it only survived as long as it did because the Muslims left it alone, but clearly that's not how things are supposed to work in Abe.
Great Britain: In 1066, the competing claims to England's crown annihilated each other, causing the kingdom to collapse in the face of the mighty Scottish army. I find this storyline rather implausible. Can anyone give me a sensible explanation for the current split of Britain, or rather, come up with a more justifiable split of Britain in the first place?
Ireland: In real life, Ireland was ruled by dozens of different chieftains. But in Abe, it is united, and dramatically develops into Europe's greatest naval/colonial power. How did/does this happen? A few Portuguese refugees don't make an empire.
Ukraine: With a weak Poland and no Lithuania, Ukraine can get its independence. This is actually quite well handled, as the Ukraine player has to carve out a major power for himself, rather than being given one to start with.
Caliphate: In the Abeverse, the Caliphate held together. But doesn't this have profound implications for the whole Muslim world, not just the area around Baghdad? For example, would the Mamelukes have taken over Egypt?
Swabia: What happened to the Swiss Federation? It's not the sort of thing you can just inherit!
Kalmar: this is a historical entity, but in real life, it broke up with Sweden leaving the Union. In Abe, it's Norway that doesn't like the union, though for some reason they are keen on Scotland. But why do they prefer Scots to Swedes/Danes?
Finland: In the Abe world, Sweden is considerably weaker than real life. One symptom of this is that it never gets assertive enough to break away from Kalmar; another is that it never conquered Finland. As a result, the Finns picked up Christianity from the East.
The Teutonic Order: In this version of history, they battered Poland and completely conquered Lithuania. This isn't actually too far from history: Lithuania especially got attacked repeatedly by the Order, and they only finally gained the upper hand in 1410, when they allied with the Poles and defeated the aggressive Order at the Battle of Grunwald. But what if that battle had gone the other way? Alternatively, what if they'd never allied with Poland, or converted to Christianity, before being picked off by the crusaders?
The Hanseatic League: This is also a historical power. The difference is that while the real Hansa got weakened over time, the Abe one gets stronger and stronger. But how do they turn themselves into such a military power (something they never were in real life)?
Granada, Byzantium: These are powers from a bygone age, which somehow managed to survive in reasonable shape in the Abeverse. One question about Byzantium, though: what happened in the fourth crusade? What if we say that in Abe history, the fourth crusade actually got to the Holy Land? Byzantium in Abe isn't all that hostile to Catholics, and a non-diverted fourth crusade would help explain both this and the strength of the KoJ.
KoJ: Apparently, Jerusalem survived till 1419, and maintained the size it and the other crusader states had put together at their height. But how? Historically it only survived as long as it did because the Muslims left it alone, but clearly that's not how things are supposed to work in Abe.
Great Britain: In 1066, the competing claims to England's crown annihilated each other, causing the kingdom to collapse in the face of the mighty Scottish army. I find this storyline rather implausible. Can anyone give me a sensible explanation for the current split of Britain, or rather, come up with a more justifiable split of Britain in the first place?
Ireland: In real life, Ireland was ruled by dozens of different chieftains. But in Abe, it is united, and dramatically develops into Europe's greatest naval/colonial power. How did/does this happen? A few Portuguese refugees don't make an empire.
Ukraine: With a weak Poland and no Lithuania, Ukraine can get its independence. This is actually quite well handled, as the Ukraine player has to carve out a major power for himself, rather than being given one to start with.
Caliphate: In the Abeverse, the Caliphate held together. But doesn't this have profound implications for the whole Muslim world, not just the area around Baghdad? For example, would the Mamelukes have taken over Egypt?
Swabia: What happened to the Swiss Federation? It's not the sort of thing you can just inherit!