I'd love to see a feature where you can filter followers by whether you follow back, or by mutual connections.
Basically to make it easier to identify people you want to follow that slipped by.
Discussion
Nostrgram.co already has a "Following+" filter that gives you the feed of the "People you follow and the people they follow". Works perfectly for this. Along with the ability to highlight people you follow and people that follow you with different colours, it works like a charm to be able to find some quality follows that you may have missed.
That's awesome, thanks very much for the info I will check it out!