I'd suggest they flash the View choice on the menu bar back and forth between normal and red background (slowly - no more than every 5 seconds). Easily seen, and takes no additional space. If this can't be done (I don't remember what properties are on individual menu items), they could flash the color of the main application title bar. I think you can do this to the minimized task-bar button, too.
Speaking of that, would anyone else like to see them change the main app title bar and the minimized taskbar button caption to show the account number first? When you have multiple stock accounts, and multiple TWS sessions minimized, it's a pain to figure out which one to restore since the button only has room to display "Stock and...".