In my opinion the points method to judge the eliminations, does not work always.
I think the judges should talk.
Exactly like the real battles, the judges take notes and then discuss about who deserves the most, and the pairs for the eights should be random to allow everyone to demonstrate what they can do.
Obviously this method need more time, but i tried it and i think it's the best way to judge, i like to talk about this also live.
I hope i've been helpful.