Tactical level: We've got a feature request open on the ability to do this; interested parties should email the
support ninjas and we can vote this up on their behalf.
Strategic level: Looking over some of the threads here from back in beta days will turn up the entertaining discussions re: how to handle action groups. The current implementation was 'good enough', but I don't think there are too many folks who feel it's ideal.
This is something we want to revisit at some point in the future, in other words. :-)