So lately I've started adding code to most of my forms that updates the document.title attribute to the name of the form.
I find that this is a nice option because otherwise every tab for a Starting Form just says "New Submission" and this gives it a more custom name.
What I'd love to see is another checkbox under the Form title input field to make the form title also be the document/tab title.
I think it should be optional because I can see some instances in which "New Submission" may be preferred, but it would be a handy option that shouldn't require much to implement.
Although I'm doing it with JavaScript, a built-in option would hopefully get rid of that split second where it says "New Submission" before the ready event fires and the title is updated.