People rarely think about it, but how you order your team can actually matter in a battle. The human eye (at least in cultures that read left to right) likes to look at a screen first from top left and move to the right, so when your opponent opens the game screen, the first thing they will think about (whether they know it or not) is their top character. That doesn't matter to you. At all. What you should be caring about is which of your characters your opponent is going to try and smack first. For some weird reason (probably the layout of the game screen) the human eye won't move to your top character like it would if it was text. Instead, attention usually shifts to the middle guy. This isn't always true, and experienced people train themselves out of this (usually) by analyzing all the characters their opponent has and attacking logically rather than what would be aestetically pleasing (is that how you spell it? Ok whatever.), but used correctly, this concept can be taken advantage of. Lets say I have this team: Kon Yumichika Hanatarou (awesome team btw, even after Yumichika got nerfed). People (particularly newbies) like to attack Yumichika because he is in the middle. If they were acting based on logic, they would not do such a silly thing - because Yumichika can heal back life when he attacks. Kon sometimes gets targeted, but less often than Yumichika. The SMART thing to do is attack Hanatarou (the healer) first to get him out of the way. Do you know why almost no one does? Because he is beneath Yumichika, the last character I have, and the last place the human eye looks when looking at a screen. Most people (unless they think about it) won't go for him. So let's see, i have yumichika, who can heal back life, getting hit the most, Kon, who can stun or become invulnerable with one chakra getting hit the second most, and Hanatarou, my vulnerable healer, getting hit the least. This is one.. ok it's the only application of team arrangement 
