I would consider elevated twin beds like most compact Euro motorhomes have, but a platform bed where you sleep across RV seems like they copied design from common do-it-yourself van floorplan. Basically, the primary bed is similar to the bed over the cab of Class Cs. That’s worse than corner beds in that you have to climb a ladder, and then climb over your partner. I can’t see wanting to do that every night. Maybe in my 30s, but not now.
If anyone was interested in that type of motorhome, I would suggest waiting a few months for the new Ford Transit. The 2020 Transit will have dual alternators and higher GVWR, which would make upgrading battery bank capacity and faster charging easier.
Other advantages to waiting a few months may be the larger fuel tank which would extend range on gasoline motorhome (25 gallons just not enough), and front swivel seats should lead to additional floorplans.
Here’s a video of interior. Seems pretty roomy (wide) even without a slide.