I would very much suspect LM will transfer ex BM NCL crew over as they are all ready to go on the EMB 145s which LM will be operating out of NCL. Just new uniform, training etc before start of service as well as negotiating employment contracts.
the positive here (given both companies were under common ownership with access to trading information) is that the NCL routes must be doing well or they would have chosen other ones to continue... (looking a bit like a pre-pack administation if other ex BMI routes follow)
I agree with both these comments - the NCL operation was pretty much a stand alone base, but is clearly valuable as it's been immediately replicated. Any expansion would be a whole new ball game.