Currently, if you want to launch a revenge attack against someone, you have to go through the process of checking out who attacked you and whatnot. Then, you may not be able to attack that base if they're too powerful. Then you have to go through that whole process again, scroll down to the next base and then scout it to see if you can attack that one. If you could scroll through your revenge list like you do your enemy war bases (next and previous buttons with an attack button) it would be much easier I think.