The REI Co-op cycles CTY 2.1 is a mid-drive with Shimano Steps that retails for $1999. It looks like a nice build for the price.
Yeah, that's kind of what I was thinking. Goducks, you and your wife sound like you are pretty fit, I bet you don't need 750 Watts, particularly if you are not doing a lot of hills! That REI Co-op is 50 pounds with the E5000, and if you guys weigh under 150, and aren't doing serious hills, you'll be totally fine with a bike like that.
My bike-- pictured in my Avatar-- is a Motobecane Ultra e-Adventure, which weighed 49 pounds stock in a large size, has full suspension, and lists for $2,000 (when it is in stock, which, unfortunately it is not right now.) They are available through Bikes Direct, an online retailer.)
A few other things: I dropped down to 2.2 Maxxis tubeless tires (from 2.4 stock) and got a lighter saddle, got the large down to 46 pounds, and none of my rides are LESS than 1000 feet. With a 418 Wh battery, I have a range of about 40 miles with 4,000 feet of vertical-- yes, that would take some effort with only an E5000. With only 1,000 feet of vertical, I'm sure you could do 60 miles, maybe considerably more.
But to address your specific concerns, I find it's not very hard on the hands and joints even at 50 PSI-- I know the suspension is for traction, not comfort, but OMG it's so much more comfortable than my lighter kit e-bike with only seatpost and stem suspension.
And as for how well it moves at 0 PAS? I find if I've just come down a hill, the rolling resistance is so low that for a mile or so, I might keep the motor off completely, though generally I will eventually go back to ECO. (The E5000 only has three levels of assist, ECO, NORM, and HIGH). And cresting a hill, hold on to the bars tight-- after riding my unassisted Raleigh Competition and a Rossignol e-bike with an e8000 on vacation, I was shocked at how quickly my Motobecane accelerated.
For you guys, riding a medium or a small? With no mods, I bet the bike would be 46 or 47 pounds stock right at your price point, $2,000. And with the mods I did, you'd have a 44 pound full suspension e-bike for 2,500.
I bet your journey would be like mine-- you wouldn't plan to do rides with 3,000-4,000 vertical.
But it would just happen.