Let us tread lightly, for this changes take time

[Undead Martyr]

In general,
I really like the mechanism as it mirrors likely civil unrest after a foreign religious takeover. Plus, it allows a greater cultural diversity since converting rulers may stay in power. I really like that.
Yet, I have to assent to the OP's argument, that the rebels forces tend to be too strong. So maybe consider toning their strength down, a little dear dev's? Or, even better, create a game rule which allows three to four intervals (weak (0.5), normal (1.0), strong (2), very strong (3)) to suit the individual player's preference in terms of challenge.
And on top of that, please consider extending such a religious rebellion mechanism to a greater variety of CB (e.g. Muslim invasion, as mentioned above) so that people not simply discard of the duchy holy war-CB as to risky in the long run

Because the Crusaders totally faced massive peasant doomstacks after conquering the Levant...
And the Iberians faced massive revolts after taking over Andalusia...

I think that HIP, like Meiou and Taxes, tends to take a nerfbat to doing "ahistorical" conquests (specifically, in this case, things involving wrong religion and such), ignoring that 1) this is supposed to be a sandbox game, and 2) that's not how history worked. Granted Paradox doesn't allow for much nuance (at the very least, religion/culture should be proportional rather than a binary factor), but even so, it doesn't make for fun or engaging gameplay IMHO.

 

[Spirit_mert]

This game is already so easy dont ask them to make more easier. Prepare yourself for rebellion aka dont be a noob..

 

[DorlasAnther]

This game is already so easy dont ask them to make more easier. Prepare yourself for rebellion aka dont be a noob..

And the award for most stupid response goes to...

As far as I remember, name of this mod is "Historical Immersion Project", not "Peasants Will Rape Your Ass Project". Continuous huge peasant rebellions after lands were conquered in holy wars and rulers decided to be tolerant of their religion are historically inaccurate and therefore should not be part of this mod.
Especially when, as was said previously, these revolts don´t occur outside Holy War CB. Are you telling me it is a good design when King of Castile reconquers part of Iberia from Muslims and faces 20k peasants few months later...and then 20k two years later...and then 20k five years later, while Seljuks can conquer all of Byzantine Empire, replace or convert all nobles and there is not a single rebellion?

 

[Undead Martyr]

I will note that I've seen 2 for 2 games in 867 with a Coptic revolt taking over Egypt. Granted the plural of anecdote is not data, but still, it seems pertinent.

 

[DorlasAnther]

I will note that I've seen 2 for 2 games in 867 with a Coptic revolt taking over Egypt. Granted the plural of anecdote is not data, but still, it seems pertinent.

2 out of 3 for me (although they took only small parts and triggered Jihad in 900), so it may not be just a coincidence.

 

[Amyntas]

I'm going to add my voice the the clamor here -- I have seen a Coptic Alexandria rise up in 4/5 of the last games i've played. Which, don't get me wrong, is cool -- but it shouldn't be happening this often. It's ahistorical and deeply implausible.

At the very least, revolt size should be in line with the population/demesne levy of the land in which they are rebelling.

 

[DorlasAnther]

This spawned for me 9 months after I conquered that duchy. As you could guess, the most tolerant option was used. I think I had 8k troops at that point.
Honestly, it has gotten to a point where I just imprison uprising leaders immediately after they spawn (unless it is some small uprising because I have just 2 counties of that religion). This system in its current form is absolutely ridiculous.

Also, I think one issue that has not been brought up is how they pillage holdings they occupy. So not only do you have to face extremely powerful revolts after you use Holy War CB, those powerful revolts also completely ravage your lands.

 

[Lopatou_ovalil]

Also, I think one issue that has not been brought up is how they pillage holdings they occupy. So not only do you have to face extremely powerful revolts after you use Holy War CB, those powerful revolts also completely ravage your lands.

Their own home