We're interested in making the per-target publishing information available to users in a way that works for all customers. See comments from Product Management below and feel free to offer more examples of Publishing Targets and customization to the main list view.
We'll likely offer per-target information "on demand," though we're seeing if we can get similar data in the main list itself (that performs well and works for any number of targets with minimal configuration). Votes and more examples can help increase attention for this enhancement request. :-)