I'm using Postbox for my RSS feeds at the moment. I have it setup so I have my one "Account", and then, "Folders" like Apple and Photography that have multiple sources.
And then I'm using the Reminders feature to pin/star them, and I have this filter that runs and puts them in my iCloud email account under a RSS folder that I can then pull up in my email clients on iOS.
But for the most part I'm still using subscriptions in Safari.
I could live without it to be honest. It's nice, but it can take you awhile to find a way to make it work for you.