I installed and maintained three different AM TIS stations on 530 KHz during my time as an emergency manager. Limited to 10 watts and a very short loaded vertical antenna by FCC rules. Over a good ground system this inherently inefficient system actually played pretty well. I have received SWL reports from 2000+ miles away. My point is that any "600 meter" band ultimately allocated will be both interesting and usable especially if the ERP is reasonable and there are no antenna restrictions.
There are sheep. There are wolves who prey on the sheep. There are sheepdogs who protect the sheep from the wolves. God protect those of us who are sheepdogs.