Missing Piece for the Arena Set Vaulted Ceiling "Wedge"

[Bourbon]

Believe you overlooked the “wedge” vaulted ceiling piece. There is a square piece but it does not work when you hit an area using wedge foundations. See pictures.

Normal tunnel section over square (cubical) foundations.

Tunnel section over wedge foundations

Overview of the build section. Tunnel runs along the wall just below the top of the wall.
Would it be possible to add a Vaulted Ceiling Wedge to the Arena Set?

[Bourbon]

Additional info. The following picture shows the outside of the wall where the square vaulted ceiling pieces were used over wedge foundations.