Questions about customizing Speedgrader preview frame

[Stephen Donohue]

I'm currently developing an external quizzing tool that returns a grade and a URL, and I've been asked to make a few edits, which I'm not sure are possible, to the Speedgrader preview screen. 

1. Is it possible to edit/remove the text that appears at the top of the preview frame: "This submission was a URL to an external page. We've included a snapshot of what the page looked like when it was submitted."? 

2. Is there a way to not include the "snapshot" that's generated when the URL is submitted? The submission URL directs back to our tool. which is a Unity WebGL application, so the snapshot is just a picture of our loading screen. We'd prefer not to have a static image of a loading screen, as that would be confusing to a user.

3. Is there a way to customize the way the URL appears on the SpeedGrader page? The URL generated is rather long so if we had an option to write some text that linked to the URL instead of displaying the entire URL that might be helpful.

4. Is it possible to automatically load the url within the frame without requiring a user to click the link each time?

Thanks!