This is something I thought of ages ago, only issue with it is: People can easily keep eachother tagged to ally and if there isn't enough staff online this can be gamebreaking. We're trying to be as alert as possible for cleaning but from time to time it is also largely taken out of context. A lot of people mistake two fights mixing as cleaning. If a faction just went through their portal after refilling and then get camped and ganked after they enter the Nether, that's not cleaning. If they then run back to their faction for the other teamfight, it's still not cleaning but rather it just became a three-way fight.