Be able to view who's on my team FROM the main screen
It can be hard when playing with a group you're not familiar with, or even if you are familiar, but their "regular" color wasn't available. Just looking at the map, I can't tell/remember which players are on my team.
Even just a row or column of colored dots or squares with a color corresponding to each teammate. Even better, to place cursor over each colored dot and the "hovering" is noticed by the machine and the name of the teammate would pop up adjacent to the corresponding colored dot.
I suggest moving the Game Name in the title bar from being Centered to being located more to the left. Then, after the game name, the title "My Team" followed by a row of colored dots as described above.
When you're playing 5-15 or more games, simultaneously, my teammates vary from game to game. Sometimes we're teammates, and the next time, we're opponents.
Also, a large Round Number below the 3 steps of Deploy, Attack, Confirm. I can't tell on my iPad what round I'm on, making it VERY difficult to plan for the expiration of Diplo cards!
Teams are more clearly identifiable.