Reasonably simple, but I think it would be useful

When you are being asked to fold / raise / call, change the title bar, possible repeatedly, to give notice to anyone who has minimised the browser / using another tab as to not hold people up

especially on the full tables it take too long to site and wait for everyone to decide, so you make your choice and go browse, sometimes its your turn quicker than expected and you have made everyone wait, or lost your hand completely