@mwittig did a short test with node v6 and v8 today. I found some glitches, had to update some dependencies but overall it doesn’t look too bad. Could you explain, what the biggest problems are?
BTW: if anyone wants to try: https://github.com/michbeck100/pimatic/tree/node_v8
I didn’t do any bigger testing, so be prepared that not everything will be working. Just make sure to do a clean install of pimatic.