It’s disappointing that the open-source version doesn’t have the same graphical touchscreen as the demo videos. That would be a fun platform to build on. An off-the-shelf touchscreen probably wouldn’t increase the cost or complexity too much, but I suspect they wanted to publish a design that could be built and extended for a while without needing to be adapted to whatever inexpensive touchscreen was available that week.
I’m still strongly considering building one! And maybe adding some CV or i2c inputs.