I think that you would virtualize a card if:I think black arrow is good enough...so why make a V-card about it?
1) it's very poor and unused
2) it's not in line with Tolkien's works
As I said before, Black Arrow & Bard are already good for the game, so this is the second case.
I don't like the actual virtual versions, cause I think that they don't respect the Tolkien's characterization (and they don't need a virtualization following the first point).
For example, Black Arrow wasn't created to kill only dragons or for men specifically, so why do we use bonus like these to fix Bard?
I think the better way to virtualize is to consider these 3 points:
1) balance
2) roleplaying
3) improve strategies (especially those that have little use)
So I try to suggest cards that have all those 3 characteristics.