I evaluate a lot of markets' sizes based on the populations that exist within a zip code. This is fine when aggregating things for a trade zone, but when I need to visually see where the pops are coming from, sometimes the geography can be misleading. Using a thematic map with smart tile or equal ranges, its going to show a place like downtown Tampa as being pretty light on population because the pop within a small geography is not very significant. I can create a ratio, but that sometimes is difficult in illustrating the absolute values and counts of people in a particular area.
Okay, on to my issue. I tried to manually create a "graduated circle" heat map by filtering a zip code (turned into a centroid via spatial info tool) and then manually changing the size of each point. The output looks pretty good -- its helpful for ME to know where I need to focus my attention. However, if I'm going to include this in a presentation, it would be nice if the legend matched. The point size is supposed to increase as the pop increases, but the legend just has the same point size for each range.
I wonder if using the Legend Splitter tool, you could set up some logic to alter the 'ImageStyle' field? Looking at an example, the ImageStyle field has a portion for the pixel size of the legend image that says "width: 14px;" or something similar. Adding in a Join, or Formula or Find and Replace tool to insert your own preferred image sizes in place of the default might help.