I’d like to add a vote for this as well.
That said, failing that, I’d like acf to include filters on conditionals in the same or similar manner as location choices. Currently it is fairly easy to write a plugin to hook into the location rule types, rule values, and rule match. As far as I can tell there is no way to accomplish with the conditional logic component. Of course, it is entirely possible that I’ve missed those filters.
In the meantime, I will probably just use http://www.elliotcondon.com/conditional-logic-for-advanced-custom-fields/
