Video Assist 4K feature request

I'm using an 1,33x Anamorphic Adapter and recording on my Video Assist 4K. That way it's very hard to judge the final composition. Would love to see the picture desqueezed, but still record the squeezed 16:9 4K image!

Now the video assist 4k has a Anamorphic De-squeeze function since some last firmware updates. For me it's very good, but it would be better if this mode de-squeeze it with bars on top and bottom instead of cropping left and right. Of course the grid have to be shown in the correct way too...