I had the same issue that I always have with tables, which is the red seats. The problem with those desks is that their backs face the board. For group work it doesn't really matter, but when I'm up at the front kids in these desk have to actually turn around to look which isn't ideal. Usually I've just tried to avoid putting kids in these seats if possible, but I don't really like that. I want to be able to use all my desks.
The other smaller issue was the orange seats. I use the back board to post the ISN table of contents and WWK so these kids would have to turn around for a couple minutes in the beginning of the period to look at the board.
I made a small change yesterday that I'm not sure why I didn't think of earlier.
Now no one really has their back to me and the only slight issue is those two orange desks that need to turn around to see the back board. Still not completely perfect, but much much better.