Thank you!

About your questions:

1. No, you have to use CSS to hide it if you find a way to manage that in WP
2. No
3. It reads the contents of the immediately parent html tag element. So add the play button shortcode accordingly
4. no
5. There is the custom template option that allows you to choose custom colors. Other than this you have to work on custom CSS overrides
6. No idea, maybe you have a javascript/jquery issue
7. This is exactly how it works

Best regards

-

John