The strongest alliances for the five cities in the region (One city one alliance) should have a friendship option to help each other.
I ask the game admin to enable it.
For now, I have been allowed one alliance to be my friend and one rival.
If I want friendship with another alliance I lose friendship with the first one.
If I want to help two alliances within my region, or if they want to help me, I cannot allow them to have a 25% reduced waiting time in same time.
My suggestion is to allow each alliance to has an option for five friends (both sides) from each city one alliance so that five alliances in one region can have a team game in the region's competition.
This is very important for the end of the game when multiple alliances are participating in the mega city.