- Having Free Cities mercenaries as an extra 'continent', needing a port on the eastern coast to benefit from rather than a Great House
Maybe, that begins to make things pretty complicated. Also I think we should focus on Westeros and the 7 kingdoms. I think we should start with what we've got and maybe bring in this idea later.
- Make the Iron Islands one territory and have their bonus be +1 for each 2 or 3 territories on the western coast
This is kind of a clever idea. I was thinking about making Pike 1 territory and making their other territories boats, but I might like your idea more.
- Different territories in King's Landing having different effects (e.g. Master of Coin giving a multiplier for mercenary bonuses, Varys bombarding other King's Landing territories or some such. I don't know that I can think up enough special powers for each territory, though.
Yeah, It's a cool idea but it might be too much. It'd be so cool if holding Vary's could lift fog of war for you, but obviously that's not an option.