"canEntityDestroy" allows to protect block of destruction by such mobs as ender dragon, wither and some another moded mobs. It will be great if carpenter's blocks will act in the same way as its "cover" block.

Or, if it is acceptable for you, it will be awesome to make them constantly protected of mob destruction(or configurable), so you will be able to build your base in the "end" of any materials and it will not be destroyed by Ender Dragon.

I can make it for you in case you are interested in such features.