improve wall breaker targeting

hi.
i suffer a lot from deploying wall breakers hoping for them to go to vital targets, like joint walls or deeper ones. most of the times i deploy them, they don't go to the place i wanted them to go to, or when other troops are already hitting a wall and then when i deploy a wall breaker to complete that, it goes to another wall that's not even near it! i think it would be a great improvement on them if you enabled the attacker to choose their target wall. like, first tap on the targeted wall, then tap on the place where they'll be deployed. if that option is not possible, at least improve them so they won't be useless most of the time!
ohh and also, when the wall breaker gets killed before reaching his target, or before dropping the bomb, why can't you make his bomb explode anyway! it could hit the targeted wall, or if it's not near it, hit nearby buildings.
thank you :)