BTW I added an option in the embed modal so that the iframe is lazy loaded.I too prefer the non-branded experience, but an opt-in sounds good. As you know, I coded a wrapper to be able to lazy load the player when it comes into view in the browser (for pages with many players).
This works on all modern browsers.
Since you're a techie you can probably add the iframe attribute yourself but just wanted to let you know in case you missed it