Well this seems pretty speculative... so here are a couple of my thoughts... I think the trouble is... there are serious differences / requirements based on type of use... from a serious carry point, the light weight helps a lot... but that's not conductive to range use... range use & home defense cross over, but not so much with hunting...
so there will always be at least 3 different "formats" unless you want to add the single actions as a 4th...
short, light weight, easy to carry, with smallish diameter cylinder... CCW type revolvers ( BTW... I still like a short light weight revolver, even though I do have a several good holsters, & a good gun belt )
medium barrel length, heavier revolver for night stand / range use
longer barrel scope mountable hunting caliber use
single action range fun & cowboy use...
as far as materials... I have several scandium frame, titanium cylinder revolvers, with smaller cylinders... add provisions for a compact laser, I don't like the plastic, but perhaps that will bring in new shooters, & or keep the price point down...
the medium barrel length revolvers adding extra rounds seems to be a plus, better sights, tritium or fiber optic, would be a plus for night stand use... as would possibly a rail for mounting a flash light???
longer barrels could use integral scope mounts, & calibers popular for hunting, in finishes that wear well, aren't flashy & with grips comfortable to shoot
the cowboy guns just by nature need to be left alone, with the only improvement being better looking finishes like premium case colors, or deep blue colored blueing