We learnt that sub-categories didn't make much sense.
As mentioned, it was a trial feature. It will be removed soon.Sub categories make perfect sense actually for this feature and it's largely one of the reasons I bought this. It doesn't need removed, it needs fixed. I wanted to list states, and then have their most popular cities as subcategories. Since sub-categories were advertised, I'd appreciate it if you didn't give up on it, and fulfilled the ultimate goal of making them work out.
We learnt that sub-categories didn't make much sense.