I think splitting the post into sections dedicated to specific metrics might help. You could keep WIP metrics live but as different sections. For example...
Top N By...
Growth Percentage: ... ... ...
Absolute Number of New Subscribers: <eg. trendingcommunites +5000 new subscribers> ... ... ...
Trending Formula (WIP) (Link to post detailing formula): ... ... ...
Etc.
I think that grabbing the easy metrics and offering them up initially will be more beneficial to growing your own subscriber count than trying to work out a clever way to do just the one thing.
Love the idea though, I've posted about this community in a couple places and I'm thrilled to see that it's taking off a bit. Great job!
Not for me. Attempting to scroll down does nothing either