Only way we can get them to fix it is by never stop complaining about it until they fix it and make it right the more people speaking up against it the better there is a few solutions that comes to my mind that would work.
base it on power first then on lvl not the other way around as it is now.
Completly random battlefields. Or the best solution speed up the merging a bit and kill this cross server bull* that can be so hard since they already have system in place for that.