With the new wireless heatmaps it would be very nice to be able to have the heatmap on the associated controller's node page. However we can only select a map on the map resourse from the list,so having an option of a text box so that we can use variables to select the map (e.g. setting it to "Heatmap - ${Caption}") used within the map resource would be great.
If the map did not exist than it could display an error of "Map name not found". A different approach would to be able to apply a filter to "Custom List of All Maps" so it only would show heat maps or one's to do with ${Caption}. I think this would be really useful for other node pages too.