The team selection slider (to select/edit a team) is just a dreadful user experience. Once you have several teams it becomes a hard task to get to the right team. It requires fine motor skills beyond my control. A better solution would be to offer arrow buttons (left and right) to skip teams.
You can just swipe from left to right or right to left over your current displayed team. You have the whole screens width to swipe on.
@Schemerlamp:You can change the language at the options menu easily
I have 13 teams.
I use the slider to go to the first, last, and middle and then swipe left or right.
It is much better than swiping right through 13 teams.
But I did vote for better roster interface