It would be interesting to see the Blue states talking secession the way the Red states so often do. But, how long do you think it would take for Trump to send in the troops? I would guess about 10 minutes. He would have his new Gaza removal policy for California. In fact I am surprised he hasn't already suggested seizing all the fire devastated areas, especially Marina Del Rey.
You are on to something with the good guys coming up with a strategy for this post-constitutional era. But I still don't see how we get there.