Image Planes & Edges Only mode

When using image planes (rather than background images)

It would be a very useful feature if you could add the ability to
- Set the image plane to show the image when Rendering Options > Wire Frame (On)
- Set the image plane to cull its backface for the image plane/s only (whether you are in Shaded + Wireframe, Transparent or Wire Frame modes)

When using image planes (rather than background images)

It would be a very useful feature if you could add the ability to
- Set the image plane to show the image in edges only mode

Do you mean not to show the image plane in vertex/polygon/object modes?

No.

I want to be able to see the image on the image plane when Rendering Options > Wire Frame is turned On.
The image would then remain visible when switching between vertex/edge/polygon/object modes while Rendering Options > Wire Frame is On.

PS Wire Frame and Edges Only mode is the same thing. You've labeled the button at the bottom of the viewport Edges Only but it does the same thing as Wire frame (On).

https://digitalfossils.com/Download/NVil-Feb-25-26-Steam.zip

View > Object Shading > Render Image Plane With Special Options. Cull back facing faces and faces visible in wireframe mode. Image planes can be created by the 'Create Image Plane' button in 'Plane' primitive tool.

It works perfect, thanks for that 

Having these two features, removed the limitations when using image planes as references while modelling.