Hello :)
I just checked my sites at Google Page speed page, and one suggestion from Google is about javascript, making them load asynchronous to save in that precious load-time.
I don't know if this can be implemented in this plugin, or if it would have to be a global wordpress system edit. But just to point it out here is the Google info on this:
https://developers.google.com/speed/docs/best-practices/payload#DeferLoadingJS
Is this something that could be implemented? :P
Best regards,
SNURK