Air Berlin
I think the DHC8's from LCY could be very good for Air Berlin and One World, I have heard from a reliable source that this is likley but they cant get the slots at the moment. LCY is very congested at peak times although with Baboo pulling out there is an AM and PM peak slot available.
LCY is also not open until a little after the current arrival time at Stansted so they would have to retime back by an hour. the sad thing is that it increasingly lookes like Air Berlin is "dead man walking" at Stansted.