Needs broader support. I understand they built it for Ocusynch 2.0, with the Mavic 2 models in mind, but not having this work with all their drones will hurt them in the short term, could spell early doom for it.
I invested in the first Gnarbox. While it worked decently, the app was buggy, never updated, the hardware sometimes would take forever to connect. And the Gnarbox team were never great on keeping the community updated. I would be hesitant to fund another one, while I am happy to see they are trying again.