Add a colum that shows the "revenue(income)" from each alliance player's financial overview.

Would allow for planning on when you may have enough Geos for some action.

I realize this could be done by alliance communication, but as it is dynamic based on interest, cities taxes, and troop expenses, this would simplify the process. Also, with alliance memebrs on different schedules and playing times, would allow for efficient communication.

Also, this data exists and the user data is already being poled for other alliance details.