@Vlad Do tabs and extensions map 1:1 or 1:many with processes? If so, is it possible to name the Process according to the tab?
i.e. in Activity Monitor, it would say "Orion Web Content [Gmail]". Or, if this imposes too many constraints like should you put domain or website title or inability to rename process only once the page has loaded, how about giving some UUID in the process name, and Orion provides a way to map from UUID to the specific tab, such as from the Tools or Develop menu