AudioContext suspend/resume/release

Hello TAG!

We're discussing an issue in the Web Audio API (
https://github.com/WebAudio/web-audio-api/issues/317) of the need for
suspending and resuming AudioContexts for power consumption reasons.
 Alongside this, we've found the need to be able to release AudioContexts
completely - in short, AudioContexts may be consuming system resources, and
we need a way for developers to definitively state "I'm done with this
now", aside from just releasing references and hoping the GC takes care of
it.

The current proposal
<http://cwilso.github.io/web-audio-api/proposals.html#widl-AudioContext-release-Promise>
is to add a method to the AudioContext interface:

Promise release ();

Releases the audio context, including any system resources used by it. This
will not automatically release all AudioContext-created objects, unless
other references have been released as well; however, it will forcibly
release any system resources that might prevent additional AudioContexts
from being created and used. The promise resolves when any
AudioContext-creation-blocking resources have been released.

Do you have any concerns over this pattern?

Thanks,
-Chris