You can already have Kami and Kara mixed if they're in the same group. This isn't about faction or citizenship. There's already a very complex method for determining who can and can't PvP based on faction, civ, and whatnot.
If, currently, you and I were in a team in PR, and Bina comes along, what happens? Is she Green to you and Red to me? Or is she Green to you, and Green to me also because you and I are in the same team? If I kill Bina, do I become Red to you, even though you and I are same team?
The way it works now is the way it should continue to work. The only difference is that you've just turned 8 Red dots into 8 Green dots. That's it. It doesn't matter to you what those 8 new Green dots do.
An immediate benefit is for treks. Multiple times Ini's treks have spanned more than one group, and in PR, it's just annoying. When I hit Kami 60, the guildies that trekd me to get my PR tickets spanned multiple groups. Mining parties (back in the day) were also more than one group.
If, currently, you and I were in a team in PR, and Bina comes along, what happens? Is she Green to you and Red to me? Or is she Green to you, and Green to me also because you and I are in the same team? If I kill Bina, do I become Red to you, even though you and I are same team?
The way it works now is the way it should continue to work. The only difference is that you've just turned 8 Red dots into 8 Green dots. That's it. It doesn't matter to you what those 8 new Green dots do.
An immediate benefit is for treks. Multiple times Ini's treks have spanned more than one group, and in PR, it's just annoying. When I hit Kami 60, the guildies that trekd me to get my PR tickets spanned multiple groups. Mining parties (back in the day) were also more than one group.