While I think this discussion is largely a waste of time because of the coming release of Clot, I think that the best way to deal with AstroBiotic is to simply restrict Astroscript and Biotic, so that you can't play both in the same deck, and possibly restrict Trick of Light or Fast Track with them as well. NBN would still be an extremely good faction if it weren't for Biotic Labor, but it wouldn't be such a huge pain in the ass as it is right now.
The problem as I see it isn't NBN Fast Advance. In fact, every NBN deck since Beale has been a Fast Advance deck to one degree or another. The problem is Biotic Labor + Astroscript, and to some degree, Fast Track. As long as the runner has the ability to deny the Corp an Astro train by trashing SanSans and/or R&D lock, NBN is great, but not oppressive. The discouraging thing about it now is that you can very easily lose the game without ever making a meaningful play on a remote. The corp can just draw Biotic + Astro + Burst econ and, as early as turn 2, make it really really hard for any runner deck to do anything about them winning.