With the discussion of theoretical cartridges and stuff we want Ruger to make; I am going to plug my idea for a medium frame LCR.
The new gun would really be nothing more than the current LCR swelled up to make it something similar in size to the bygone Security Six. With the accompanying bigger cylinder, Ruger would chamber the gun in 44 Special and rate it for the nonexistent 44 Special +P.
I have said in other threads that the 44 really does need a SAAMI pressure update. I'm not talking about a huge increase but rather a mild one. Maybe bump it up to 21.5K or so.
Partner with Hornady on the ammo and introduce a flex lock bullet in the 180-200 grain range. Something with a bit more mass than the shallow penetrating 165 gr Critical Defense.
The new gun and ammo would be a modern day version of the Charter Arms Bulldog. Light, easy to carry yet powerful and useful for backpacking, fishing, and personal defense.
The new LCR would also be available as a 6-shooter in 357 and a 7-shooter in 327. This way Ruger would have a 5, 6 and 7 lineup.
2.5 or 3" barrels would be used throughout. The top strap would be beefy enough for a Novak rear ala Wiley Clapp and the metal bits would be nitride treated and/or stainless steel.
In essence it would be a polymer frame version of this. But with a shrouded hammer: