In reply to laurence_falconer:
Another useful addition, along similar lines, would be a 'heatmap'.
The map would show the areas where routes have been climbed recently, you could filter the map for last day, 2 days, 3 days, week, etc.
I recently saw a similar map on the Suunto app, which shows what people have been up to recently - might help place trips to where the conditions are best, or to avoid the crowds! Could be especially useful during the winter.
A heatmap showing where you've got the most routes wishlisted might be quite cool?
Mike
Post edited at 16:54