I think it should be noted, again, as I think we had this figured out before, that NOBODY CAN POSSIBLY ATTACK ANOTHER TEAM'S HOME ISLAND WITH GALLEYS.
Galleys can't enter ocean, and we've got a solid buffer of ocean around us. I only assume the same is true for other teams as really makes sense. We can enter our own cultural borders, but enemy units can't enter ocean even if it is someone else's cultural borders.
However, this isn't to say I don't get where the concern for military and/or resources is coming from - that still is something of course. It's just I really doubt any invasions/attacks are likely. The main continent being overrun with some barbarians, that is actually a possibility - much easier to fight barbs with axes than warriors. But I'm not sure anyone would even feasibly attack another team's outlying cities on the main continents with axes either.
I really say we just hold our horses and be flexible on diplomacy though. Really, the best thing we want is to get 2-3 civs working together to tech cooperatively. If we get three teams and we choose to research Iron Working, and one of them gets Alphabet and another gets Aesthetics or I dunno whatever they want, that's all good for trade. What we don't want to happen is bad diplomacy, resulting in, say, us and the Vikings both building up military tech we can't use easily against each other and puts us behind all the other teams.
Galleys can't enter ocean, and we've got a solid buffer of ocean around us. I only assume the same is true for other teams as really makes sense. We can enter our own cultural borders, but enemy units can't enter ocean even if it is someone else's cultural borders.
However, this isn't to say I don't get where the concern for military and/or resources is coming from - that still is something of course. It's just I really doubt any invasions/attacks are likely. The main continent being overrun with some barbarians, that is actually a possibility - much easier to fight barbs with axes than warriors. But I'm not sure anyone would even feasibly attack another team's outlying cities on the main continents with axes either.
I really say we just hold our horses and be flexible on diplomacy though. Really, the best thing we want is to get 2-3 civs working together to tech cooperatively. If we get three teams and we choose to research Iron Working, and one of them gets Alphabet and another gets Aesthetics or I dunno whatever they want, that's all good for trade. What we don't want to happen is bad diplomacy, resulting in, say, us and the Vikings both building up military tech we can't use easily against each other and puts us behind all the other teams.