if you look at the uef cybran border there are so many cybran attacks on hold and no one can stop them. so i suggest the ability to be able to cancel an attack on hold by defending them, this allows the lower players to put them on hold for the more experienced players but they have to do it quickly before it gets canceled
-< - you could have a countdown once the attack has been out on hold say 15 mins once it has been halted, after that time it is avaliable to be defended and give a free win, this cuts downs on loads of battles being holded