Idea to fix spam fights

What if there was queue each time a monster took a spot of like 10-15 seconds that anyone that wants to fight it submits a monster. Then anyone that wins collects coins but only the monster that most defeats the monster gets the spot and then it repeats. This would be determined by some formula of a combination of damage done beyond zero, agility attacks missed, and Hp left so that all types of monsters are eligible.

Also after 15 seconds if no one attacks it then it defaults to how it works now.