No. 3's seem to be becoming recognized as an expert's gun, a sort of specialized walking hunter that only a confident, experienced hunter carries into the field. In these days of cheap plastic spray-n-pray guns, a single-well-placed bullet has fallen from the front page for the majority of hunters.
If I were king at Ruger I'd have two limited-small run production No. 3 guns every year, in effective calibers, maybe in stainless, but never plastic...
I'd start with a 35 caliber (348 Winchester) and explore 7mm-08, the WSMs, and of course, the 480 Bill Ruger chambering.
Local seller has an EXC-condition 223 tagged at $499, which I would grab if I didn't have a perfect example already.