I love the idea of having a count available but I don't think doing this as a view would work for my purposes. I'd love to be able to show an item count for both searches and pointers in the cards title bar after its name (and type) in both closed and open view.
view:count
what to do if someone tries to use it on a type other than Search?
we do this as Item+*type+*count (closing)
card count+discussed in support tickets
card count+relevant user stories