Yes, I would consider going the "retro on purpose route", particularly if you intend to keep the knotty pine. Since you don't have to redo flooring or paint walls or cabinets (and won't have to for future turnovers), I would maybe consider investing in a bold terrazzo or terrazzo-look tile in the kitchen and repeat it as the backsplash. It's decade appropriate, durable, and would also make it look fresh as it happens to be trending. Providing a bit of pattern on the floor would also draw some attention away from the walls.
I also second the idea of putting a small island in the kitchen area (not an attached L peninsula) and refinishing the floors.
The other easy swap is retro style light fixtures. Remove anything too industrial, "farmhouse" or 90s looking. Replace with simple white globe style lights. Something like this flush mount in white would give a nod to the decade of the house while elevate all the bedrooms without having to change much else.