Flawed independence faction

[Ithvan]

So, here's the situation. I am emperor of Britannia, and I also hold the kingdom titles of Galicia, Leon, Castille and Sicily. Every 10 or 20 years my vassals tend to want to become independent, the fools. Almost every duke in non-de jure Britannia joins the independence faction and they present me their ultimatum.

And I let them become independent.

Immediately afterward, I offer all of them vassalization, and they all accept. No-one ever refuses. Moreover, afterwards they all have a +50 opinion modifier for being granted "independence"
I also control the duchy of Badajoz which isn't de jure part of my kingdoms, and they have no problem whatsoever accepting me as their liege either. Their counties have actually changed culture, I think it has something to do with this.

I'm pretty sure this was not intended, but still it's convenient not to have to deal with a realm-crippling war every decade or so.

Thoughts on whether this should stay or whether this needs to be altered/tweaked?

 

[Baron Jukaga]

I wonder if this is happening because you get a strong claim on the Duchy you granted independence to? Maybe that claim should be removed, it would stop non de-jure former vassals from getting back in the fold so easily.

 

[kal56]

I'm sure it's probably unintended and should be fixed, maybe with a mechanic like the one that prevents you from being excommunicated twice in a row, were once they get independence they won't accept vassalization for a bit. It's not a game breaking issue though because it's up to the player if they want to use a gamey tactic or not.

 

[Ithvan]

I wonder if this is happening because you get a strong claim on the Duchy you granted independence to? Maybe that claim should be removed, it would stop non de-jure former vassals from getting back in the fold so easily.

That could be the case, and it would be a good idea to take that claim away.

I think I can revoke all formerly independent titles, but I'm not too sure since the screen where you see your claims is cluttered with scores of them.

"Ah, my good friend, duke of Asturias and Navarre, welcome back in my realm! As a token of my gratitude, I will now take one of your duchies away and you will not be able to do anything about it! Welcome back!"