Without having used it, I am optimistic that the new Bottom parameter present in the new cabinet models will be a great help in killing the "in your face" tendencies of the full-on cabinet sims found in the former B3.
If I had to guess, the signal path of these new cabinet models would likely be: Blend of RE-20 and SM57 mics, then EQ via the Bottom parameter, then that blended between full-on resulting cabinet sim and none at all (dry.)
The above combined with the fact that cabinet models are available for use without an amp model has me super excited to use the B3n as a stand-alone cabinet sim pedal with external dirt and preamp pedals in front of it!