I certainly appreciate the level of investment Google has made here and I can sympathize with how it feels to just want to ship a feature already! I've been pumped for web components ever since the first pitch you and Dimitri gave us in a hotel suite a few years ago at TPAC. But keep in mind that both Microsoft and Mozilla have (failed) experiences in building component models for the web (e.g. HTAs). This isn't an easy feature to get correct. The web needs us to get this right and shipping it before there's consensus isn't how we're going to succeed in that regard.
-Jacob Rossi [IE team, but speaking on my own opinions]