nah. HRE is no fun. its just one big mass of counts n dukes you need to keep under control and steamroll anyone who opposes you. just tried barcelona. i got a GREAT wife(best intrigue in the game AND a genius) but then valencia decided they wanted a holy war against me-_-
Here you go...
http://forum.paradoxplaza.com/forum/showthread.php?604942-Usurping-the-Papacy-D
Read the thread, then decide if you want to give it a whirl and let us know. It looks interesting, but I'm not going to abandon my current game to try it.
What are the ways to tie other provinces to yourself through marriage?
Marry one of your children to the claimaint of another title.
As an example:
I arranged a betrothal for my heir to a princess of Sweden who had a claim to the throne of Sweden.
They hit 16, get married.
I wait until they have a male child, then declare war on Sweden to press the claim on the throne for the daughter in law.
I win the war. The new Queen is now the ruler of Sweden. My son leaves my court for Sweden and is now the powerless King. They have a male child. That child is now the heir to the Kingdom of Sweden from his mother and the King of Scotland from his father.
If I don't press the claim, the claim usually passes on through generations. Thus when my son and daughter and law ascend to the throne of Scotland, their male child will still inherit the claim on Sweden. There are cases where a claim will pass out of the possession unless pressed in war. I don't really understand the exact precursor for that, but you can hover over the claim on the diplomacy window for the claimant and it will tell you if the claim will be inherited.
To tie a claim by matrilineal marriage the process is the same, but you have fewer potential claimants to chose from. Usually only courtiers will accept a matrilineal marriage. This has the advantage of insuring that the claimant will come to your court instead of leaving for another court. You can also search for claimants that will accept your invitation to court. They will be obligated to accept your desire for a matrilineal marriage. In this case, however, you need to wait until the son of that couple is born and press the sons claim. That way he becomes your vassal. If you press the claim of the man you invited to court, you will lose his vassalship unless the title you wish to bring into your realm is part of your de jure realm. For instance, if you invite a claimant for the Duchy of Meath playing as Scotland and you press the invited courtiers claim, he will become independant.
If it were the Duchy of Moray, he would become your vassal. If you press the claim of the son (who is now in your dynasty) the Duchy of Meath would become part of your realm and the son would be your vassal.
You can also use marriages to flood the court of another kingdom with your dynasty members. I have used non heir sons to marry into the family of the King of England. He had 3 daughters, I had a son to marry to each of them. After the King with whom I arranged the marriages died and his daughters had heirs, a few well placed assassinations put my grand and great grandchildren on the throne. Although they are not in any way tied to my Rulers realm, I do get a better score for the rulership of my dynasty. I also accomplished this with the King of Ireland (purely by accident) and the Kingdom of France. This method also creates additional claimaints that are part of your dynasty. I just invited 3 Princes of England who are all dynasty members into my court and have claims on the Kingdom of England. They are married already and have children. Once I put out the brush fires with a few earls and a border dispute with Ireland, I'm going to roll England into the fold. Since those Princes are all part of my court, I don't have to worry about another realm scooping one of them up and pressing his claim against me.