Should container binds be async?

[bradcypert]

When binding data to a container, should we support async binds? If so, do we wait for all binds to resolve successfully before marking the container as ready to be used?

The alternative is that people would need to resolve their async items outside of the binding of the container and pass the result in to the binding function. I'm going down this path right now with a project and we'll see how it shapes out, but it felt weird at first.