I also have one side of games at an angle like in the dutch pinball museum - more out of necessity because else I cannot take the glass off, the space in between is too small otherwise.

You lose a bit if space at the end of the row, but it has many advantages: in the middle you create more room, you see a bit of sideart, players next to each other don't touch hands, and with the newer Sterns it's more easy to reach to the on/off switch, and it looks less boring.