Hi Imagineer,
As someone who has been using Blueprints for about a decade now. I hear you, and I feel your pain. 
Verse is still very new, so building a node based visual scripting system atop of something that is just beginning to form its foundation might be why we don’t see Blueprints in UEFN.
I also try and rationalize BPs absence by saying “Everything is so tangled up in the ‘Fortnite way of things’ (not genericized) that we’d only end up with a lot of FN-specific cruft.”
Hope that helps put things into context!