Can you explain the qualitative difference between forming a clan called The Pirates vs. a 'rouge group' called the The Pirates? There is effectively none. If I made it so you could make a clan in a way that doesn't require you to have a home landmark, but keep all the benefits the same, would that be suitable? Because you've still listed nothing, aside from Colonial Income, that a village has over a rouge.
In aspect of a 'Clan' one aims to have a village. The difference would be the perks themselves and requirements. A single member attempting to form one generates no perk behind it. When 2 to 3 members come together and are objectively acting as a mafia, then perks would be granted. These perks are simply geared to sustaining their anonymous hideouts. Meaning the more activity in missions that are placed for rogue groups grants them more anonymous hideouts in landmarks even in Villages at a later stage!
The point here is that rogue groups aren't supposed to be like villages. They can never be, so taking the example of Akatsuki. These rogue groups are merely like organizations that can be hired by villages or people. They cannot claim landmarks, but have the potential to 'corrupt' landmarks.
Note: Know these Rouge groups don't have be bad. They can be gray, good or bad. The taste is up to the individuals, meaning merchant members can form their own groups which in turn grants them purpose.
This also ties into the missions system they reward good deeds and bad deeds.
Here's an example: Level 1 Rogue Group: 2 to 3 RPer members (Max points 12) + Daily required Rogue Missions
D-Rank (1):
(Good) Establish Organization influence
(Mischievous) Gather resources from several landmarks (at least 4)
C-Rank (2):
(Good) Be hired by a Clan, village, or Shinobi individual
(Mischievous) Control the wealth, or resources of a landmarks (at least 2)
B-Rank (3):
(Good) Form a Pact with a Village/ Clan.
(Mischievous) Increased threat level, attain a bounty on individual member of your Rogue Organization
A-Rank (4):
(Good) Establish serval Pacts with Clans/ Villages.
(Mischievous) Increased threat level, attain a bounty your Rogue Organization
S-Rank (5):
(Good) Enriching contractors, become a global asset (at least 4, level 3 or higher clans/ 2 villages)
(Mischievous) Global Bounty on Rouge Organization
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