1st a suggestion: how about allowing it to be idividually activated on Multisite? I've got many sites on a multisite that I manage, and don't need them all loading up videos that I don't watch. However a few clients manage their own sites, and it would be nice to load it only on those sites.
2nd a question: is there a way to set the width of the videos embedded in pages/posts via the shortcode? I just did a test and it's about half the width of my page. Isn't there a way (or could you add one) to make it responsive and fit the page width? Eg. width="100%" height="auto".