I'm gonna be selfish here and admit that I am more worried about a global war than horrible laws in USA.
The latter can be undone after the next election while damage from nukes is a bit more troublesome.
According to a leak the Secretary of Defense is considering "tackling" Trump if he tries to launch a nuclear strike. I think the inner circle is well aware of Trump's instability and would at least think twice letting him do that. I am not so much afraid of Trump starting a nuclear war as I am afraid that he starts a conventional one and/or spreads instability that leads to a war or wars in the future. This is still so bad a situation that I, too, would rather take Pence as a president.
I just wanted to point out that the main reason the Republicans have not been able to do more damage is Trump's political incompetence. If it had been Pence who was pushing through the same agendas we would be in a much worse situation right now. The leaks just point out that Trump is getting more and more unbalanced which changes the equation towards getting rid of him being the less shitty option.