It's interesting. This is the third small-box-format device that Waldorf has put out in the last year or so (Rocket, Two Pole, and now the Streichfett). The whole thing seems like an effort to produce a boutique-y, mix-and-match line of products. The three pieces strike me as being sort of "modular," in the sense that each does only one thing, but really well.
Perhaps this is akin to the Volca series: small, (relatively) inexpensive, meant to be used together?