Would be nice to have a button/checkbox in Breakpoints panel to toggle a sort of global "stop on first line after run" setting which is presently accessible only under Settings>>Tools["Debugger"].

I'd further like to the behavior of the check box reversed for a single run with the shift key. That is, if the check box is turned on and you click debug, stop at the first line; if the check box is off and you click debug while holding down shift, *don't* stop at the first line. And vice versa.

Good idea/addition.
Lest the original idea gets diverted to reworking the Debug Button, I should state that I exclusively use the Firefox extension to initiate remote debugging externally. Having a checkbox in the beakpoints panel will be beneficial to remote debuggers such as myself.