Ability to update the window title with scripting. Something like
sys.set_window_title( title )
Or model from love - many of the features they have Defold doesn’t and would be very useful
sys.window.set_title( title )
sys.window.get_title()
…
https://love2d.org/wiki/love.window
It could be supported for HTML5 builds too with helper.
document.title = title;
There are some kinds of games where being able to change the Window title is useful. Such as a form of notification for chat messages or events “(1) Game Title”.