I would like to provide a little feedback regarding population growth. I have played several campaigns now with a keen eye on the reproductive abilities of my subjects
, as I am very interested in the ability to build advanced barracks and stables in my provinces. After having looked through the settlement mechanics file and playing around with the values a little just to see what effects it would have, I must say I like the approach taken with regards to population growth. The hardest part is getting the castles from wooden castle to stone castle. Once you can build the 2nd and 3rd levels of farms, the castles are self-sustaining to citadel level, although having a high chivalry general (at least level 6) will speed it up significantly. Cities don't need quite such micromanagement as public order bonuses also have an effect on population growth. The highest percentage I have attained has been 4% in Baghdad compared to 9% in vanilla or other mods, which helps make for a nice leisurely pace.
The only part I think could use some adjustment (of course this is just my opinion) in a future patch, would be to slightly decrease the penalty to public order from squalor by .1 or .2, especially for castles. With the bonuses the AI factions get to growth they can end up with huge populations in their citadels which even with garrisons of 4-6 units can rebel. Although I use spies to encourage those actions in border provinces, I have also seen the main cities and capitals when they get into the 30-40 thousand range rebel even with up to 10 units in them. It also makes sacking the preferred method of taking a city as occupying a large city or citadel becomes impractical at best.
I would like to finish by saying I do like the system as it is (after finally figuring out how to get my wooden castle garrisons busy with the local merchants' daughters
).
These are some conclusions from my experience in the campaigns since the mod team here actually seems to take such things into consideration.