Hi Michael, and welcome to the community.
No, I didn’t want to do that because when HA downloads blueprint it adds a URL so you can update easily. I have pushed out a BP that has ‘collapsible sections’ if you would like to look at this new feature in HA. I have done this to see what happens and how it goes roiling out this new feature.
I really try and make sure when you update it just works. It a trust thing with the community. I also like moving fast and it is killing me holding this back. Lets see how my other blueprint goes and see if I get positive feedback.
Blueprint with ‘collapsible sections’ 
Appliance Notifications & Actions - Washing Machine - Clothes Dryer - Dish Washer - ETC
Blacky 