Yeah, Test Pilot is more for features where Mozilla wants to experiment and see, if people even like the feature in general, not so much for bug-testing. With

Yeah, Test Pilot is more for features where Mozilla wants to experiment and see, if people even like the feature in general, not so much for bug-testing. With e10s, it was clear that it would be included in Firefox, so they just tested it by pushing it through the normal chain of Nightly->Developer Edition->Beta->Stable.