bruchi, I agree with you on the need, never understood the reason for the small capacity. I am looking forward to examining the Kel-tec and seeing how it operates. The high capacity .22LR should be a no-brainer in my estimation.
I think that would be hard to do in a handgun that has the magazine inside it's grips. The .22 LR is a rimmed cartridge, and high-capacity mags for rimmed cartridges need to be curved - just look at the 50-round mags for the Ruger 10-22. If the magazine was in front of the grip, it could probably happen.