I was wondering. What if you'd conquer Normway or Denmark as Sweden and only after that turn into a republic. Would this trigger liberal/nationalistic uprisings in Denmark and Norway? Or simply put: will Denmark and Norway (re-)emerge as a faction in such situations?
If there are rebellions in those regions yes Denmark could remerge and Norway emerge as a faction. There is no nationalistic unrest though apart from in a factions home region.
Is it possible for you to tell us something about the composition of the armies and navies you have used and seen in the campaign? The more detail the better :)
There were balanced armies and fleets.

Can you actually name units? If so, will these names appear on the battlefield?
Yes. Personally I like naming units after settlement/slots in the region they were recruited in. So for example 3rd Gothenburg Foot or 2nd Stockholm Horse.

Mh, don't really know about questions, but one part intrigues me. Would you say that giving Prussia a province in return for an alliance has proven to be worthwile?
Got me some nice techs and an ally, I would say it was worth it.

- When you changed to a republic, did you take a serious relation hit with all surrounding monarchy ?
Yes government type affects diplomatic relations.

Did they all took a "stability hit" when it occured (higher unrest) due to the exemple their people have ? Was it the reason Denmark attacked you ?
Denmark most likely attacked me due to change in relations and because of my temporary weakness due to the revolution.

- Can you now face a counter-revolution from the inside ? (revolt again with monarchists this time). or could opposing monarchy invade you and ask you to surrender in exchange for a change of government ?
Yes there can now be a rebellion by the Middle Class and you could become a Constitutional Monarchy.

- When you say you recruit an army next to Riga, does it mean you had to have a settlement there ? does this confirm the "fears" from fans saying that if you dont have multiple provinces you cant recruit multiple armies at the same time ?
Well as I had both Riga and St. Petersburg I could recruit from both settlements so positioned my army between it to receive recruits. How many armies you can recruit at the same time depends really on how many recruitment slots you have available.
is there a way to see were the AI countrys have focusted there research on?
Could try either sneaking a Gentlemen into their land to see what techs you could steal, or try to trade techs with them to see what they have.

I'm also curious about becoming a republic. Can you research democracy instead of having a revolution? Once you become a republic are there elections? If so what happens if the prime minister loses an election?
Government type changes only come through revolutions. Yes there are elections in Republics and Constitutional Monarchies, and if the ruling party lose the Opposition takes over so you get new Ministers with different traits.

Some questions:

- What specific technologies did you research - and did you gain a battlefield advantage from them?
I researched thigs like ring bayonets, square, carbines, improved grenades etc.

- Did you send too big a force to Iceland in hindsight? That being responsible for you being outnumbered by the Danes? - OR -
- From a quantity vs quality standpoint, were your troops of higher quality than the Danes and is that why you were outnumbered?
The Danish armies were of similar quality to mine, I just underestimated how many troops they had defending their capital.

Have you had occasion to build a fort yet, Jack? I’m curious how forts might affect campaigns.
No I did not build any forts in that campaign.

How much time is spent hunting down these invaders? Is there some sort of intercept function for friendly armies that have such enemy raids in their zone of control? (I believe fleets do have this chance to intercept enemy fleets passing by?)
I'd hate to have to micromanage the protection of every little resources out there.
Yes there is an intercept system so that any time a hostile force enters the zone of control of one of your armies, you get the option to attack them. I just had no armies near my border with Norway so I had to move troops to deal with them.