Heck, we need one for when we'll get a State of the Union address.....
I've already bought extra popcorn and cotton candy for that event.
As for the step-down, I think the handlers will milk it as long as they can. There are multiple angles they can play out:
1- Let him go as long as possible and then it's the 'We have to rescue the country from a madman' play....based on the growing number of dems that are 'concerned' with his having exclusive control of nuke power.
2- Now that we've used him to set things in motion on multiple levels, we can use his son in a "Huntergate" plan to rid the nation of a corrupt PotUS and we get Nixon 2.0 and it's adios Uncle Sniffum.
3- Health issues...."Dementiagate" equals adios Ramblin' Joe and hello to the West Coast Ho'....
I'm sure there's more but those are the top three I've been thinking on as the most plausible to 'sell' to the unwashed masses.....too many folks who think 'something' is coming would expect the 'something' to be as simple as an assassination attempt or such. That's too Clintonish, like the judge on the Maxwell case that got popped at his front door by a FedEx guy.
**EDIT** Assassination ain't out of the picture if they can use it against the right, ie: Using a Trump-supporting, right-wing extremist patsy.
Any way you shake the box, somewhere down the line it'll be "All Hail the Mattress Queen"...