Hi all, as per Brutalsubtlety's request, I created a mod that ports over the Sengoku Jidai campaign units to the Rise of the Samurai campaign.
No unit pack DLC units were ported as that would violate copyright. I figured this mod shouldn't be violating copyright since if you have Rise of the Samurai, you probably have vanilla Shogun 2 unless you're a wizard.
I've balanced the units for the campaign, so they probably won't be playing like their Sengoku Jidai versions.
General Changelog
Unit sizes of everyone decreased.
Ashigaru stats are an average between the levy and attendant units.
The Sengoku Jidai monk units are more offense-oriented compared to their Genpei counterparts. They have less armor and melee defense and more morale; the bow version has more range, the naginata version has more attack...etc.
The samurai units are top tier like the foot samurai unit. Katana samurai have a lot higher melee attack, bow samurai have much higher ranged stats etc. Ronin are better versions of the samurai, but have slightly less numbers.
Cavalry units probably need some balancing help, since I'm not sure how to use them very well and tried to keep their stats in line with the Mounted Naginata's.
Sengoku Jidai Onna Bushi are not a garrison unit, and can be trained as a heavy infantry unit with Second Wind. Warrior Nuns are just elite naginata monks.
Kisho Ninja might need some balancing.
All siege units have had their numbers and engines halved.
Matchlock units can be recruited in provinces with a trading port and the appropriate secondary building (Barracks for matchlock ashi, Bushi school for matchlock samurai, temple for matchlock monks). Probably will need balancing.
European cannons can be recruited at the highest level trading port. Mangonels can be built at castle and onwards.
This is a movie pack file, so just unzip and put inside Data folder of Shogun 2.