If you have a group of 2-3 people you are good man. That's 2-3 houses and 2-3 crafting benches. Take a little time before you start murdering mindlessly to get a house and some goods and build a base of operations out somewhere.
I don't see how leaving the priests in the red towns tips the favor to being red over blue. These camps your talking about don't have banks, so you're using low tier materials you can get from simple animals in the vicinity.
I need more explanation as to how it tips the favor to being red. You're assuming I know what you know.
We will assume that large groups of Reds will maintain control of Red cities post update. They will now have control of key towns plus the mobility and flexibility of the remote crafting sites. There must be some give and take here. Adding in remote crafting sites will undoubtedly buff Reds, removing Red priests from lawless cities will undoubtedly nerf Reds. However the buff will primarily be to solo and small group reds and the nerf to large group reds as solo/small group reds are denied city access on most occasions anyway. Banking will still be extremely difficult for a Solo red player. They will have to play cautiously, potentially scouting cities for lengthy times and storing their goods in their horses until they can bank making them lucrative targets for both blues and reds.
However the most important thing is that they will be allowed to exist where as currently they are arguably not.