Good account Mark. Well done.
I would stress the security threat of leaving him in office for another minute. Unfortunately, by not envoking the 25th Amendment, Mike Pence was apparently unconcerned by the risk. Not having a functioning Executive Office is an invitation for mahem from both here and abroad. That is, in addition to the continued damage Trump can do by himself, as you well describe. Now impeachment conviction is an absolute must.
I invite you to read my piece on the subject and I would be delighted to hear your comments -- "Now is the Time for Republicans to Rid Themselves of Donald Trump".