Some sources suggest that channel members should not "show off" their ops. Only gain ops when you need it (ie. to kick trolls); showing off will attract opposition, therefore avoid it.
I think the point of having many ChannelOperators is to show that we are relying on the commitment of many people, all of them friendly, trustworthy -- and proven so by their peers. Hiding your ops turns this into murkier game: We don't know how many ops there are.