I like the idea in itself, I disagree with all the war aspects. We effectively removed the existence of mercenary groups outside of a realm for a reason and this would basically add that back with extra steps. The raid CD step also doesn't have purpose as raids are not restricted towards players in realms or all players from the same realm, only rules with a raid is you can't raid a place on CD.
Some other questions I have: 5. Nomad groups must provide their own resources to build the majority of the camp themselves.
Are they allowed to use LC to build?
Nomads cannot cause extreme or permanent changes to the land (terraforming, large farms, houses, et cetera).
Not really defined what exactly is and is not a permanent change, what makes a house a permanent change? If it's burned down wouldn't it be no longer permanent.
Also just region management seems nightmarish with constant 3 week temp regions.