This idea probably won't apply to most tabletop RPGs. It's better suited for card games or team board games where it matters to have your cards and items lined up on the table in front of you. It's really awkward to be player 3 or 4 and have to play the game sideways. It would be great if each player were able to rotate their view of the table at 45° or 90° intervals so that everyone's perspective appeared to be upright even if they were playing from 4 different directions. I hope this makes sense.