Very pertinent & timely @Wendy_S. And this is something we are looking at as part of the planned update to Community Analytics; where we propose to add a set of new, real-time, actionable analytics elements. It proposes a Sunburst chart for 'New' & 'Trending' topics with & without Replies and with & without Accepted Solutions, among other things.
Please find below a sample mockup. Adding @SudheeshN & @ManuMo, who are leading this project to this thread.
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