Mmm.. maybe I'll putter in the workshop here later on.. and see what would be involved in fabbing a very simple enclosure for the remote display.

There's a choice in how to mount it -- the intended way is to bolt the receiver board to the back of the display board, with (supplied) spacers between. This makes it bulky front-to-back.

Another approach would be to mount the receiver board beside/below the display board, reducing the depth but doubling the face profile.

Mmm..