I have beat this dead horse for years, but it is still one worth kicking. The curse of the SP101 is that it is a D frame sized revolver with J frame capacity. It should have always been a small frame six shot .38/.357. Ruger should have went with a slightly taller frame size, and a 1.40" diameter cylinder, instead of a 1.35" diameter cylinder. Now that other companies are making small frame .38/.357 six shooters, this is the time to correct this mistake. Ruger also has the LCR lineup and a seven shot GP100, so there are no reasons not to do this.
When it comes to small frame revolvers the .327 thrives in turning a J frame sized gun into a six shooter. A new LCRX in .327 with a 3" barrel would make a lot of .327 fans happy. It would also be nice to see S&W offer steel .38 only J frames and .327 J frames again.