What are your rules for EU4 during Mega Campaigns?

[MachopPower69]

I love Mega Campaigns and I sometimes add rules to make the game more balanced to prevent being too overpowered in Vic2 and Hoi4.

What rules do you add to make the campaign more fun and challenging during MCs?

 

[World Union]

no great power alliance, taking only claimed lands in peace deals or sometimes I add a rule that I can only take lands maximum of 50% warscore cost, no loans

 

[necro84]

You can pick from this examples:
no allies in offensive wars and when you are GP no allies at all
no vassals
no colonization in the colonial regions
every province must be in the state
don't go over force limit
convert everything to your religion
you can't have more cultures than limit of accepted, as soon as you make a state and have enough dev you need to promote new culture
conquering only full states unless provinces are owned by more than one nation