Quite opposite.
We can make 3-province rule for participitants.
It means - whole Shogun environment possess 60 different provinces.
We will divide them in groups by 3 provinces. It means - each 3-provinces means 1 clan in Sengoku Jidai environment.

For example Uesugi lands is divisable onto two logical parts:
Uesugi : Echigo (capital) - Shinano - Hida and
Date: Mutsu (capital) - Dewa - Sado
Hojo lands is divisible onto 2 parts as well:
Hojo: Musashi (capital) - Kozuke - Shimotsuke
Satori: Kasuza - Shimosa (capital) - Hitachi

and so on (Takeda and Imagawa lands are divided on 3-provinces parts from the start)

It would means - we can get 20 different clans in the game from start. Yep, most of them - in West especially go bankrupt immediately, but it means - after 3-4 years of game - only fittest will survive.

Any province will get the same garrison - 1 Arch +1 YSam
Capital province will get Daymyo + standard capital buildings + Port + something which would be derived from "clan affinity"
For example:
A) Any clan can receive "Oda bonus". It would means - discount to Ashis + additional castle with Spear Dojo + 3 Ashis.
B) "Uesugi bonus". It would means - discount to archers + inability to be Christian (means Uesugi was KENSHIN + do you need Arquebusiers if you've got a lot of Archers?) + 2 Arch from start.
C) "Takeda bonus". Discount to Cavalry + inability to make an Agreements + 2 Cavalry from start + all Cavalry buildings in capital.
D) "Imagawa bonus". Discount to utility units + 1 "Eternal Friendship Agreement" which neighbor can't decline + 2 Ninja/Shinobi from start.
and so on.

If you like we can play with 9 active players - each will receive 2 blocks of 3-provinces. Queue in choosing of provinces would be next:
1-2-3-4-5-6-7-8-9-9-8-7-6-5-4-3-2-1
It means - guy who will choose the Best block of provinces will get the Worst block as well.
OK we can have 8 or 7 or less guys - all not used provinces will become Ronin provinces.

No problem, - I'm ready to keep all moves - it's no problem.

Main idea is - we like to have FUN and we like to create Shogun MP Campaign with Human vs Human fighting.