I personally have struggled with the Neb B in any role other than Yavaris, however on paper I can see how its a potent ship in theory.
So my question is how are people using Neb B now wave 2 has properly taken hold?
I use Yavaris and always end up ramming a gladiator with two other ships in support to give my Neb a chance of survival. Seems simpler than trying to outrun inevitable death. Seems to work effectively as it disrupts my opponent gloriously.
(Note: I found this topic helpful https://community.fantasyflightgames.com/topic/183714-nebulon-b-the-dope-behind-the-weapon/ )