Congratulations Doc.
I agree that on E-Series it’s relatively easy to get in and out of front seats. I think it’s far easier than on Ford Transit Cutaway, and no worse than Mercedes or ProMaster Cutaway van chassis. The E-Series is still #1 in RV market. I’m not sure if 2021 E-Series will change at all in doghouse area but doubt it will.
Regarding aftermarket seat swivels, keep in mind they often elevate the seat a little. That may be important to passengers with short legs.
Their Website lists the 2021 with new Ford V8. That’s first time I’ve seen it listed in place of V10.