You are welcome, I am totally with you when it comes to roleplaying your royals, having the same family name after 6 generations is a must
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Changing the total number of children in the campaign_db file seems to make the game unstable, at least when you put a number greater than four, that's a guaranteed CTD, I am not sure how well the game handles if you reduce the children.
In my previous campaign I modded out the girls and then only used family members, the effect was, as you described above, that I was always 2 to 3 generals short for developing my settlements, and only after twohundred years, when the first fortresses were completely build, I had roughly enough.Still it was a good campaign, because I had to think ahead which regions are most important to develop and then distribute my family members accordingly, but I did not have a single military general as all my chums were building stuff, offends the nobility was a frequent guest and as there was only one "family" most boys got the "family was traiterous" trait too, made my heart bleed. Every grand plague (dark age) was a royal pain in the ass too because every time the young ones died, while the old farts survived, and that even increased the "wave" effect described above, after a dark age all I had left was the grandfathers and maybe one or two lucky survivors (mostly the ones with a traiterous family). Around 1450 or so I became bored and started a new campaign.
This time (girls still modded out), I allow only the king and the heir to marry and give all other tasks to generals. I have every city governed but some castles are governed by generals with the military trait, there is no way to influence if you get a civil or military general. So far I have managed to get at least a civil one for every city. The king and the heir get ALOT of children, but mostly daughters, the game seems to prefer daughters if you are short of generals, and the game thinks I have no generals because my family consists only of a couple of royals, somehow all the hired generals are not counted towards the total. Also I get a manofthehour and adoption offer every turn, but turn it down of course. My few royals hang out in the capital and the nearby cities and are pretty unimportant to me, while in the previous game I checked the family tree every turn to see if a new son was born.
So both ways have their ups and downs, the first approach connects you more to your family but has disadvantages ingame, the second approach gives you less hassle playing but you loose some of the feeling as the family is not so important any more.
Here is what it will look like...
So I have 6 alive generals at the moment, but at the same time I have around 20 regions with a governor and some military generals. The tree to the right is all the sons from the start who were not allowed to marry. Now in generation four/five I have allowed the not heir to marry either because all the adoption offers are beginning to go on my nerves. Hopefully my family will grow from here on and I can make a better mix of family and hired generals. Also you can see that the plague did not kill one family member, it only killed generals and those were no big loss...
Edit: And I forgot to post it again, but remembered this time, if you have bugs related to your family tree, like not getting marriages or children, save your game, exit the game, restart the computer (or clear your memory somehow) and then start the game again. This should help. It's the same as with those diplomats who talk to a city forever and after you continue your campaign the next day they finally offer trade rights, as they possibly wanted to for 100 years...