Well, if you want to know how hungry some of the latest developments in the Kemper, such as morphing and the new delays have been, just take a look at the fact that we don't have the lights on the box changing immediately anymore.
Heck, guys, who knows whether any future developments will also introduce any limitation in the FX change. For example, with some of the Fractal stuff, when you run out of processing power, it WILL let you know and the patch will not work.
I also have a Virus TI Snow from the house of Kemper and with that device, there is an indicator on how much processing power each incremental tweak or effect added to a patch will have. If you breach the maximum processing power, voices will be dropped. I'm not sure how that would work with a guitar processor if "voices" were dropped.
My guess is that sooner or later we will see some new hardware.