Phil F NM (#29) has the right idea. Mine goes further.
Okay, so we're into fantasies here, so why not go the whole hog?
A new Rolleiflex TLR. One that incorporates every wonderful aspect of every Rollei ever made.
A 75mm f/2.8 Tessar (yes, Tessar) taking lens. Not Planars or Xenotars. The ever humble Tessar has a unique character and costs very little to produce. I mean, any lens from the 1880s that continues manufactured today has to have something good for it. So let's go with the Tessar.
Optional wide angle and telephoto lenses. Even a super wide. And why not?
The usual 12 exposures, also inserts for 16 and 24 exposures on 120 film, also a 35mm kit.
A waist level finder, a sports finder, and a small prism head. Not the welterweight prism the Rollei makers sold in the '50s and '60, which gives the camera an awful look and completely unbalances the camera when it's on. Maybe one of the small Hasselblad prism copies.
Let's have everything controlled on the focusing knob. Distance, metering, spot metering, lens settings and speeds adjusted with push-down buttons.
A built-in CDS meter by Gossen with spot metering.
Bayonet I accessories.
In my dreams this wonderful camera would be made in Germany and not China, but one can't have everything.
If a digital back could be had for it, my 21st century Rollei would be just about perfect.
Basic camera cost about $2,000. And while we are dreaming, affordable 120 roll film.