My guess would be no, we won’t be able to rotate them. I would think they would have shown that in the part of the direct where they were discussing building and upgrading your house.
I think if that were to be a possibility then they would have shown us the different camera angle for it, as otherwise we wouldn’t be able to see the entrance to the house.
Maybe in the next mainline game where we can have a fully rotatable camera!! But for this game, likely not. We probably would have seen it by now, or at least seen a new camera angle in which you can see the entrance to the house.
Definitely not. After all these years, it would just look odd since we're so use to seeing front-facing buildings. Playing Animal Crossing: Population Growing even feels weird at times with its 45? buildings.
I highly doubt it, but maybe? I think they're probably always going to have the houses facing forwards, even though they've now given us freedom for items outside to be rotated and stuff