I'd like to see Streamable and Vimeo for starters, and probably another image hosting like ImgBB. I worked on the RegEx for Streamable and Vimeo on my own Member client implemation.
| var streamable = /<a (?:rel="noopener noreferrer" )?href="(?:https?:\/\/)?(\w+\.)?streamable\.com(\/|\/a\/|\/)([\w\-_]{5,12})(\.[a-zA-Z0-9]{3,4})*.*?<\/a>/g;
var
| vimeo = /<a (?:rel="noopener noreferrer" )?href="(?:https?:\/\/)?(\w+\.)?vimeo\.com(\/|\/a\/|\/)([\w\-_]{5,12})(\.[a-zA-Z0-9]{3,4})*.*?<\/a>/g;
