Since now we have the great feature of being able to load multiple teams at once, our usernames may show up in more than one tier simultaneously. However, when a player is in a battle, the only way we can know what tier he/she is battling in is to actually view the battle. Currently, when we mouse-over a player's name, it shows who the player is battling against. My suggestion is to add the battling tier as part of the mouse-over message. As an example of the purpose of this: the other day I wanted to watch the battles of OU players over 1350. But many times, when I clicked "watch battle" on an OU player's name, they happened to be in a different tier at that time. I know it's a small thing, but please let me know what you think anyways.
Sometimes, a player is in multiple battles and only one will be opened by watching the battle. If the tier that displays whilst hovering matches the battle that is going to be watched, then this would be a bit useful. Usually you could just double-click their name and it'll show you what tier they're battling in anyway.