Ability to configure quick filters to function as OR searches instead of AND searches

It would be convenient if I could configure quick filters to function as an OR search.

For instance, if I use a set labels for my various user stories, where each story is assigned one label, it would be nice to be able to create quick filters for each label, and then use the filters in Plan or Work mode to only view issues with, for example, labels 'A', 'B', and 'C' at the same time.

Currently, if I click on filters 'A' and 'B', nothing will shows up, since quick filters function as an AND search.

I know that I could define the filters as Labels != "A", and so on, but it would be preferred to simply be able to configure a board to apply quick filters as an OR search.

(I initially tried creating this issue in the GreenHopper project, but it does not have an 'Improvement' issue type, so I'm creating it here in the JIRA project instead. Hope that's okay.)