Okay let's assume LH buying into Swiss even during these tricky times. What could they use it for? Take the swiss-premium pax to feed their long haul network (Asia+US) from the new MUC hub, which is so close to Zurich. Except for maybe a little crossair traffic remaining and some Geneva routes I can't see too much surviving. (Not blaming LH for this)
However wouldn't it be more attractive to socialize with BA and keep a little more than nothing?