I have one suggestion that I think would be great for alliances who don't have effective communication tools to use as a platform.
What about adding a beacon or some sort of marker that leaders can place on the War map to show what is a priority Island or objective.
I say this because I have problems with members attacking islands that aren' important at the time. And end up losing a island because they wasted an attack on a 14h island and not a 1h left island.
This would allow for leaders to at least guide alliance members.
Just a thought, may have Been brought up. But it would be cool.