To be honest I’m a bit unsure what the status and plans are for N.S. I agree that non-wrapping would be an improvement.
I wrote the new N.B which allows you to set the scale to any arbitrary note set with binary R notation or from a few presets. After this got accepted I only use N.B, it feels much better to me, to the point that my vote would be to remove N.S. However I think removing features from the firmware is not aligning well with the overall strategy of the teletype firmware.