I've previously built some browser extensions that provide info for steem users, and just the other day abh-numbers (can't remember the numbers in his username) was wondering if there was a way to see the most reblogged posts in your feed. My extension called Steemfeed (firefox store , chrome store), can show just resteems, among other things. So I've started modifying it so that the resteem output can be sorted by number of resteems (and votes and rewards). I hope to update it in the next few days with that ability.