We have been discussing the ability to construct and append DOM asynchronously so that the render lifecycle does not jank the page. See explainer at https://github.com/drufball/async-append.
At TPAC there seemed to be generally positive signals around the problem space and the general structure of the API. Should we move the repo to WICG for easier collaboration/iteration?
Sounds great! Do you have notes/minutes indicating said positive signals from other browser vendors or community members?
At TPAC, Microsoft Edge’s request was for the work to be transferred to the WICG so we could participate in a full review/discussion of the proposal. The problem space making the web asynchronous is important for all of us to be involved with.
The repository has just been moved to WICG:
Feel free to file issues and start improving! 
/cc @iank @esprehn @tabatkins @domenic