For what's it worth. Just bought my first pin (thanks Nick!). The kids really enjoyed it so wanted to start a collection. Since Im new, and not an expert on refurbishing, focused on NIB.
Called up some Stern dealers for some kid friendly Marvel themes. None had had existing inventory (or only LEs)
Regarding what I was looking for, 2 predicted Stern will produce a Spiderman VE and 2 predicted another Ironman release (I thought was interesting).