I see this board as a very useful one to use in schools.
The Pi itself is quite hard to use in classrooms (unless you've got a computer suite and can use PiNet)
If the GPIO.Zero library can be be forked so that it runs on a classroom laptop, then all the Python teaching material being developed for it could be used on this board without all the cost and complication of using a Pi3.
But the skills learnt are then 100% transferable to running same code on a standalone Pi
The same philosophy could be applied to NuScratch so that Scratch code running on classroom computer runs the hardware add-ons on the RTk.GPIO adaptor.