I agree with what Uls said. Rules should be adhered to, too insure a balanced game.
The thing that gets me, and really confuses me, is the peace rules. How does this work? I see that it is required to gain 99% before it is mandatory that peace is signed. Say I am Portugal and England declares war. England comes and besieges all three of cities in the Iberian Peninsula. After taking those, he has 60%. Will I give him any provinces? Of course not. I am far away and safe, and have colonies spread far and wide. So England gets cheated I suppose. I don't sue for peace, and eventually revolt risk in England's territory gets raised, and soon my Iberian peninsula provinces start revolting.
You see? The peace between HU players seems very hard to negotiate. Let's say France Declares war on Austria. France conquers all of Austria's provinces that border her. But the small German entities won't allow France military access. So Austria sits back comfortable knowing that France cannot come attack the remaining provinces, thus getting to a point where peace is mandatory.
So you see, human players can exploit war! They can sit there and watch as the enemy looses troops via attrition and eventually the revolt risk will rise up.
This has really confused me. If someone could clarify the peace rules that would be great.
EDIT : What about playing two sessions a week? I don't know if I can wait a whole week to play.