How about a UI change to OS and a very slight bump in the rewards for cashing out there? Leave the pips that of a normal map, but give marginally more reward track progress with some sort of clear UI indicator that you're doing it. Carrot people out of the queued maps, basically, without actually providing that much stronger of an incentive. Could apply a slight nerf to the rewards when ticking down on a non-OS map to balance out the economic impact if necessary.
I'd like to get the UI displaying correctly in OS so at least its clearer that you get rewards there.