This is a long-shot, but how about a widget for 'neglected posts' (maybe with a different title for the widget when in situ) - posts that didn't get many views because they didn't have enough readers at the time or which, for some reason, (maybe one posted them on a holiday when people were mostly away from their computers) didn't get many comments.
The 'top posts' one is fine - but why only attract readers to already popular posts?
I'm sure there are a lot of bloggers who'd appreciate a way to attract readers to neglected posts without having to manually link to them, themselves.
Just an idea - here on the Ideas forum. (Don't get mad if you don't like it! ;) )
The blog I need help with is artyoldbird.com.