Well they probably have WS requests in for the 23m7, but still want GS calls, so blocking ARCOS isn't a good method. I use auto accept at night to avoid calls for trips I won't get. I also use it when I'm flying but I usually bid a specific trip or ratchet down the qualifiers and use auto ack as well. Some people are too lazy to update their auto accept on/off all the time, frankly, I don't blame them. It's a pain to do and the easy button is just to let it ride.

Another thing that would be helpful to to be able to maintain a slip but turn it off/on without deleting it.