I dont like how they instantly assimilate and convert 100% of the pops from where you spawn them.

I dont like the way they lets you go complete commando behind line without blackflag - because it dosnt come with any drawbacks.

For now, playing with migratory units combined with other tribal mechnaics is pretty fun and immerisve , though it gets really figety and micro intensive. I couldnt dream of doing it in a fast paced game or multiplayer.I dont think being able to uproot pops as units to use in war needs to be seen as completely imbalanced, since it does cost stability to do, (particularly when not min/maxed to 20 pop per use), and perhaps more importantly, the oportunity cost of using thse pops for colonization. The i initial pops you gain from colonizing may not seem like a lot, but claiming new lands with it that starts on half your culture, and colonizing new provinces that build up a food stockpile that increases grwoth by several magnitudes, and taking provinces with goods-dublicates that enable exports or capital import, and quickly increasing country rank from #territoris... these are very strong benefits! And im largely ok with them.The problems i have with migratory pop units is twofold:This is tricky to solve without added features for culture, but when possible, it would be better to make them only halfway assimilate; into the right culture group, but not to entirely right culture. (Newly colonized could also get a short duration buff to assim speed if deemed appropriate)I mentioned this before xmas. I think it would be good to give a modifier to migratory armies behind enemy lines at the start of a war. It could be as simle as taking 25% morale hit on war declaration, but It need not be a straight up debuff, but something to prevent them from doing the most gimmicky blitz tactics. For example, they could get -50% damage taken AND dealt, -50% assault and siege ability for 6 months.This could symbolize the migrants nomadic way of life, likely traveling much more disjoined and dispersed than a concentrate army marching for battle... the same things that makes it possible for them to ignore borders in the first place.this way, they could still cause trouble , tie up defenders for a while and raze th countryside if unattended.(They should also not be able to ignore borders after war has started).I would think, teaching the AI to use migration units is its own can of worms. The devs better be pretty damn sure they like the migration mechanics before commiting to teaching them to AI.