Thanks for the suggestion. I completely understand what you mean, yes.
Strangely enough, this feature has not been requested before since I suppose that people would use a Set Variable, Get Variable (blackboard) pair to replicate that.
I understand that what you suggest here can be a bit more convenient, and I can certainly take a look at implementing this in the near future, but I am curious in why you dont want to use the Set Variable, Get Variable way of doing this? Is this purely to avoid the extra node (Set Variable) required?