I'm a bit late to this discussion, but would like to add a personal experience to the mix. In my day job we design and build a device that provides protection and monitoring to the physical layer of computer network interconnections. It is a high technology product, and was basically designed in its current form over 10 years ago. We have made small cosmetic improvements over the years, and quite a few firmware upgrades, but the basic hardware is the same as it was a decade ago. It still sells great and is considered the Cadillac of its product type in the industry.
My point is there are times when you can design a product with enough foresight where it will not need a hardware upgrade for a long time. The Kemper can easily be such a product. Can it really be improved in its core functionality, other than the effects implementation? Most improvements one can think of can be made with firmware upgrades.
And on the Kemper's cosmetics... I have had several folks comment the Kemper on how beautiful it is; the CEO of my company saw it and was quite smitten on its appearance, and this was when it was unpowered. IMHO the Kemper toaster format is a brilliant rethink of the modeler UI, on par with the original Line 6 bean, and the multicolor LEDs and button/knob selection is brilliant. I picked the toaster over the rack version as I simply think it looks great.
I'd guess if there is ever a Kemper 2.0, it will be a less expensive reduced capability version. There might be a real market for a less expensive floor model Kemper that will only play back profiles. But the original Kemper does what it does so well, maybe there aren't many ways to improve it.
It's a brilliant visual design with personality, not some bog standard rack type B black box.
) . I am not saying it's perfect, but neither are Marshall amps. The deal here is, that most of guitar players, are just that, players. Tweakers are minority, despite being very vocal. They already have Line 6 to cater to their needs