How about the Ruger 32/22?
A polite pest poker, it practically places perfectly in the platform.
A well regarded Ruger rifle would really race the (semi)rimmed little rascal.
I am reluctant to see Kel-Tec make a similar one to the SU-22 for the P-32 magazines, as I am not blind, yet...
(But if they did, I would buy it!)
I'd really like to see a semi-rimmed round in the .25-.32 caliber range, less power than the .327 FM, but more than a .32 auto, along with that a neat little carbine and revolver to go with it. Straight walled or slightly tapered case, no bottle neck, easy to reload.