Regarding the suspension of NOC-LBA, it could well be it was largely operational reasons. The aircraft based at MAN (which operated the flight of course) were reduced by one airframe which may have meant that they had to ditch the NOC-LBA-NOC sectors in order to maintain other flights out of MAN.
Even if that is the case, obviously it would suggest that the LBA route wasn't performing so brilliantly that it was a huge priority, but it doesn't necessarily mean that it won't one day return when it can be fitted into the schedule somehow. As Flybe don't have a base at LBA or NOC, it's likely to remain a fairly vulnerable route to be chopped and changed depending on aircraft availability at MAN.