Is it just me or is minor integration OP? You can very easily get hundreds of soldiers just in two turns. Just did a game where I had a very hard start, major just two tiles from capital who turns out to be nemesis, arachnids to the south who liked to chill near my capital, nomads to the east who want to fertilize the fields with my troops, raiders declaring war very quickly from the north, all other neighbors behind these. I integrated another raider minor, used their troops to quickly seize city of the ones attacking me, then another raiders declared war so I repeated, integrated another raider minor and seized undefended city. Then I found two more raider factions in the area, integrated both of them and had easily 500+ raider units ready to take over nemesis. Turn 28, 9 cities and half the world is under my control, including both original enemy regions fully under my control, their last city besieged by another raider faction from one side and by my hordes that finally made the long march to the frontlines that kept moving faster then they could walk on the other. And what more, if I actually started running out of soldiers I could just integrate another raider clan which I have already vassalized and get 400+ more troops, this is just crazy.
There is really no downside to this strategy, you get TONS of free troops along with a free fully loyal region, if you fail you can just try again, stratagems are generated reliably, , all at the cost of some PP. It even felt OP in the previous game where I used it on farmers, you get less troops, but it is still a huge ammount. Best thing is, I didnt have to build a single thing in single city outside of the capital the whole time, only roads to connect the newly united clans.
But it felt great, I kinda felt like genghis khan, uniting all the divided raider clans, some by diplomacy some by force, and then swarming over the more advanced developed nation