Since we can now use the update. domain to update firmware and MANY of us use HA hosted in docker, it would be great if you would consider offering an option in the blueprint to ONLY update the NON HomeAssistant Core components. Or put a better way for the UI, “SKIP update of Home Assistant CORE”.
I suspect I could easily hack up the YAML from your blueprint for my personal use but seeing as you referenced this Blueprint in the Shelly thread (and I had considered using it to replace my old firmware automation script). In the end was simpler for me to revise the 14 automations I had but as mentioned might help others, and will likely consider it when/if other integration start to make use of the update domain for firmware updates (I’m talking about you LIFX!) 
I’ll link to this comment in the Shelly thread where you mentioned.
Thanks for all the hard work!
–Tom