I know we're all hoping for a "smoking gun"...

...that will put Trump away, but there's no such thing. Impeachment or removal by the 25th Amendment are both basically political acts. NOT doing those things is also a political act. Right now there's an abundance of grist for the mills of either impeachment or 25th Amendment removal of Trump. What's lacking is the will. I just don't see how the appearance of new evidence of malfeasance or incapacity is going to create the will -- we're swimming in both.

Seriously, if Trump hacked someone to death with a sword on live TV, I don't think that would change any Republican minds. They'd just claim it was self-defense.