About the blocks for Sense HAT, I think the Foundation should be inspired by the official blocks for micro:bit: https://llk.github.io/microbit-extension/#blocks
They have more blocks now inside ScratchX: http://scratchx.org/?url=https://llk.gi ... js#scratch
Compare these to the Sense HAT blocks in Scratch 2 in Raspbian Stretch.
It would be good if Scratch 2 programs for Microbit could run unchanged on Sense HAT. The only difference would be that you would have to use another extension. Then Raspberry Pi 3 with Sense HAT could be like a deluxe Microbit. One difference now is that Microbit have 1 based coordinates for the display, and Sense HAT, 0 based. One should also have the x- and y-axes in the same directions for the devices, respectively. ScratchX extension for Microbit also have blocks for acceleration.
Here is a picture of another extension from PICAXE (S2Bot 4 Scratch) running on Raspberry Pi 2 and communicating with BBC micro:bit:
https://chrome.google.com/webstore/deta ... j?hl=en-GB