The Toaster (without Poweramp)
has a lot of room in the back,
some want a usb audiointerface? -> just built a fitting one for the road (the lexicon alpha for example is tiny, something similar would be enough
i love tube preamps -> Preamps like the Art Tube MP are tiny and sound good so it would be cool in the back of the toaster
some want better effects -> effects like the new eventide h9 are also tiny and great sounding some like that in the effectsloop of the kemper or even better spdif