I thought you would mention TGA. But thats another story, I just played TGA once and was a little delusioned when playing the Dutch. Found also a BUG I think. When I had to battle once again the weirdo AI played german empire, at one moment all their troops had vanished and their cities left with about 8 to 20 guns each. So one simply could walk in thos cities, take them over and all those guns aswell. But keep that aside, I just wasn't in the mood for another round yet, but that might have been a fault. I might give another try in some time and give better feedback on it.
Back to topic now. I was a little busy lately, so give me a little more time to upload everthing. You are welcome to implement any idea that I had/have. All I do is a little consulting. Its all your work, and a good one as such.
I will give more details on everything with the upload. A few things ahead though, just ideas for now. Well I know you are French, but I think it would be more accurate to replace France with England, well speaking of King Henry II - England (The guy from Anjou, quite well known to be the first knight using a heraldic symbol -> Plantagenet = "planta genista" and so on). I guess during most of the Reconquista period the duchies of Aquitaine and Gascogne stayed under English control (at least until mid 15th century, 1453). This "England" could be in some kind of alliance with Portugal, in respect of the "treaty of Windsor", which was kind of the starting point for the english-portuguese alliance. I would also replace Provence with the eitehr the county of Toulouse or France, but rather Toulouse for the follwing reasons. The count of Toulouse had a quite some influence during that period and was also pretty independend of what remained of the scatered french kingdom, which didn't regain power until the end of the hundred years war with england. In fact, I think the french Kings depended heavily on the Toulouse support. The county of Toulouse also had more impact on the meddling on the Iberian peninsula, and could be close with Aragon. The county of Provence(part of Kingdom Arelat) on the other hand was still part of the Holy German Empire for quite some time, and geographically somewhat more distant to Spain etc.
A yes, and I would change some locations/citynames, but look those up in the BIQ.
Edit, oh yes, and look up for the games from Paradox (Europa Universalis I & II, Victoria, Crusader Kings etc.)
http://www.paradoxplaza.com/othertitles.asp
Here is a review, no idea what it says, I've googled it
http://www.gamespot.com/pc/strategy/crusaderkings/review.html
Its an excellent game, but be warned its complex, tough ^^ and seductive.