Interesting timing for you to say that, Byron.
;-)
(I.e., that's something that we're looking into right now.)
Be sure to submit a feature request with details to register your vote:
http://adobe.ly/feature_request
It would be nice to unqueue an item that is not rendering while a render is in progress. Or re-order the comps as well. I like how you can continue to operate in AME while it's working. I'm aware of the script options out there but it would
be nice regardless.