I can see that, as always, you did a serious research.
Yes, there was a post where I have added a simple example of how to open a window http://jsfiddle.net/handsoncode/n98Lsbwq/ it is pretty simple and does not look pleasant but it works. We currently do not have any similar built-in feature, however, I can agree that it is a good idea and can be the best choice for many projects.
On Monday we are having a Planning Meeting but as far as I know in Q2 we will keep switching to Babel (as there are some necessary tasks related), we'll build the Angular 2 wrapper and of course fix existing bugs. On our Roadmap for 2017 you can see some ideas for Q2 (we are not planning things further) and I cannot, unfortunately, see any similar issue.