So, I noticed that in one piece of concept art we saw a ghoul dressed up in revolutionary era clothing up close, and in another we saw him, the Sole Survivor, and a BoS member fighting side by side. I believe this ghoul is going to play a part in our misadventure, and that my friends, is fantastic! As for the BoS Paladin, well I don't know. I think hes just a Paladin... (Ah screw it haha, guess this little theory went down fast! But, it does make things interesting as it ties Mr. Garvey in to the larger scheme of things perhaps. I had failed to notice the red of the ghouls coat)
As for the next suggestion, there is a scene in the combat montage where the Sole Survivor is descending a building in what appears to be a window cleaner lift. In the VERY FIRST shot there is what appears to be a Super Mutant fighting beside the Sole Survivor. He does not appear to be firing at him, but instead at the other mutants. Maybe a one time quest companion? Or something more? The model for this mutant appears to be thinner, so maybe he is a smaller, weaker, but more accessible version of Fawkes? I hope so. It in the same sequence in which we saw destructible environments.
Codsworth has been confirmed as a companion! Thanks for confirming that guys.